{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-3520", "tracking": { "current_release_date": "2026-03-31T00:44:35.685234Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-3520", "initial_release_date": "2026-03-04T16:38:50.953161Z", "revision_history": [ { "date": "2026-03-04T16:38:50.953161Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-04T16:38:52.692766Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-04T17:26:31.184075Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-04T17:26:35.970769Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-04T17:49:22.669590Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-03-05T00:39:57.002175Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1)." }, { "date": "2026-03-05T00:40:05.910452Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-05T06:20:56.205200Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (5).| CWES updated (1)." }, { "date": "2026-03-05T12:30:38.045430Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| Product Identifiers created (2).| Product Remediations created (4).| References created (5).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-05T12:30:40.365730Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-05T14:11:38.569701Z", "number": "11", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-09T18:26:34.411721Z", "number": "12", "summary": "CVSS created.| Products created (1).| Product Identifiers created (1)." }, { "date": "2026-03-09T18:26:37.430349Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:28:44.094157Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-30T12:07:55.477376Z", "number": "15", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (3)." }, { "date": "2026-03-30T12:07:58.985907Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-31T00:37:53.334656Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| Product Remediations created (6).| References created (36).| CWES updated (1)." }, { "date": "2026-03-31T00:37:55.732369Z", "number": "18", "summary": "NCSC Score updated." } ], "status": "interim", "version": "18" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<12.0.12.24", "product": { "name": "vers:unknown/<12.0.12.24", "product_id": "CSAFPID-5844093" } }, { "category": "product_version_range", "name": "vers:unknown/<13.0.7.0", "product": { "name": "vers:unknown/<13.0.7.0", "product_id": "CSAFPID-5963615" } } ], "category": "product_name", "name": "App Connect Enterprise" } ], "category": "vendor", "name": "IBM" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/1", "product": { "name": "vers:rpm/1", "product_id": "CSAFPID-1508265", "product_identification_helper": { "cpe": "cpe:/a:redhat:rhdh:1" } } } ], "category": "product_name", "name": "Red Hat Developer Hub" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/1.8", "product": { "name": "vers:rpm/1.8", "product_id": "CSAFPID-5177667", "product_identification_helper": { "cpe": "cpe:/a:redhat:rhdh:1.8::el9" } } } ], "category": "product_name", "name": "Red Hat Developer Hub 1.8" }, { "branches": [ { "category": "product_version_range", "name": "vers:oci/1774545605", "product": { "name": "vers:oci/1774545605", "product_id": "CSAFPID-5966218", "product_identification_helper": { "purl": "pkg:oci/rhdh-hub-rhel9@sha256%3A2e8ed97c6e6d232f66bb81dc074b8bb2712dc54004cc565fcb1d2b43a9bb2046?arch=amd64&repository_url=registry.redhat.io/rhdh&tag=1774545605" } } }, { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1508266" } } ], "category": "product_name", "name": "rhdh-hub-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:oci/1774549552", "product": { "name": "vers:oci/1774549552", "product_id": "CSAFPID-5966219", "product_identification_helper": { "purl": "pkg:oci/rhdh-operator-bundle@sha256%3A400d642f10348a0728a624b135228714b3302f1cabc096150a340407133c54e7?arch=amd64&repository_url=registry.redhat.io/rhdh&tag=1774549552" } } } ], "category": "product_name", "name": "rhdh-operator-bundle" }, { "branches": [ { "category": "product_version_range", "name": "vers:oci/1774544220", "product": { "name": "vers:oci/1774544220", "product_id": "CSAFPID-5966220", "product_identification_helper": { "purl": "pkg:oci/rhdh-rhel9-operator@sha256%3A72d72d0e8b67012bfaaeae0e1fbbcf8e35c74d4d6252051eabef3e9dd979d48e?arch=amd64&repository_url=registry.redhat.io/rhdh&tag=1774544220" } } } ], "category": "product_name", "name": "rhdh-rhel9-operator" } ], "category": "product_family", "name": "Red Hat Developer Hub" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/2", "product": { "name": "vers:rpm/2", "product_id": "CSAFPID-5486263", "product_identification_helper": { "cpe": "cpe:/a:redhat:ansible_portal:2" } } } ], "category": "product_name", "name": "Self-service automation portal 2" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5486265" } } ], "category": "product_name", "name": "automation-portal" } ], "category": "product_family", "name": "Self-service automation portal 2" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:semver/<2.1.1", "product": { "name": "vers:semver/<2.1.1", "product_id": "CSAFPID-5758399" } }, { "category": "product_version_range", "name": "vers:unknown/<2.1.1", "product": { "name": "vers:unknown/<2.1.1", "product_id": "CSAFPID-5771995", "product_identification_helper": { "cpe": "cpe:2.3:a:expressjs:multer:*:*:*:*:*:node.js:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<2.1.1", "product": { "name": "vers:unknown/>=0|<2.1.1", "product_id": "CSAFPID-5760886" } } ], "category": "product_name", "name": "multer" } ], "category": "vendor", "name": "expressjs" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-3520", "cwe": { "id": "CWE-674", "name": "Uncontrolled Recursion" }, "flags": [ { "label": "vulnerable_code_not_present", "product_ids": [ "CSAFPID-5966219", "CSAFPID-5966220" ] } ], "notes": [ { "category": "description", "text": "Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-3520" }, { "category": "description", "text": "Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-3520" }, { "category": "description", "text": "### Impact\n\nA vulnerability in Multer versions < 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow.\n\n### Patches\n\nUsers should upgrade to `2.1.1`\n\n### Workarounds\n\nNone\n\n### Resources\n\n- https://github.com/expressjs/multer/security/advisories/GHSA-5528-5vmv-3xc2\n- https://www.cve.org/CVERecord?id=CVE-2026-3520\n- https://github.com/expressjs/multer/commit/7e66481f8b2e6c54b982b34c152479e096ce2752\n- https://cna.openjsf.org/security-advisories.html", "title": "github - https://github.com/advisories/GHSA-5528-5vmv-3xc2" }, { "category": "description", "text": "### Impact\n\nA vulnerability in Multer versions < 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow.\n\n### Patches\n\nUsers should upgrade to `2.1.1`\n\n### Workarounds\n\nNone\n\n### Resources\n\n- https://github.com/expressjs/multer/security/advisories/GHSA-5528-5vmv-3xc2\n- https://www.cve.org/CVERecord?id=CVE-2026-3520\n- https://github.com/expressjs/multer/commit/7e66481f8b2e6c54b982b34c152479e096ce2752\n- https://cna.openjsf.org/security-advisories.html", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-5528-5vmv-3xc2.json?alt=media" }, { "category": "description", "text": "No description is available for this CVE.", "title": "redhat - https://access.redhat.com/security/cve/CVE-2026-3520" }, { "category": "description", "text": "A denial of service flaw was found in Multer, a Node.js middleware for handling `multipart/form-data`. A remote attacker can send specially crafted malformed requests which may induce a stack overflow. This can lead to a Denial of Service (DoS) making the service unavailable.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/csaf/RHSA-2026:6174.json" }, { "category": "other", "text": "0.00058", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "8.7", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.6", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is product_remediation data available from source Redhat, Is related to a product by vendor Ibm", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "fixed": [ "CSAFPID-5966218" ], "known_affected": [ "CSAFPID-5758399", "CSAFPID-5760886", "CSAFPID-1508265", "CSAFPID-1508266", "CSAFPID-5486263", "CSAFPID-5486265", "CSAFPID-5771995", "CSAFPID-5844093", "CSAFPID-5963615" ], "known_not_affected": [ "CSAFPID-5966219", "CSAFPID-5966220" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-3520" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3520.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3520" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3520" }, { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-5528-5vmv-3xc2" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-5528-5vmv-3xc2" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-5528-5vmv-3xc2.json?alt=media" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-3520" }, { "category": "external", "summary": "Source raw - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3520.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-3520" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0903.json" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/csaf/RHSA-2026:6174.json" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/expressjs/multer/security/advisories/GHSA-5528-5vmv-3xc2" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-3520" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/expressjs/multer/commit/7e66481f8b2e6c54b982b34c152479e096ce2752" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://cna.openjsf.org/security-advisories.html" }, { "category": "external", "summary": "Reference - github; osv; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3520" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-5528-5vmv-3xc2" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0903.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0903" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7267862" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-3520" }, { "category": "external", "summary": "Reference - redhat", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444584" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/errata/RHSA-2026:6174" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2025-61140" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-1615" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-2359" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-24046" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-25153" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-25639" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-25896" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-26278" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-27606" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-27942" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-3304" }, { "category": "external", "summary": "Reference - redhat", "url": "https://access.redhat.com/security/updates/classification/" }, { "category": "external", "summary": "Reference - redhat", "url": "https://catalog.redhat.com/search?gs&searchType=containers&q=rhdh" }, { "category": "external", "summary": "Reference - redhat", "url": "https://developers.redhat.com/rhdh/overview" }, { "category": "external", "summary": "Reference - redhat", "url": "https://docs.redhat.com/en/documentation/red_hat_developer_hub" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-11518" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-11639" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-11731" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12108" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12139" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12323" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12335" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12392" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12417" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12444" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12447" }, { "category": "external", "summary": "Reference - redhat", "url": "https://issues.redhat.com/browse/RHIDP-12480" }, { "category": "external", "summary": "Reference - redhat", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6174.json" } ], "remediations": [ { "category": "mitigation", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "CSAFPID-1508265", "CSAFPID-1508266", "CSAFPID-5486263", "CSAFPID-5486265" ] }, { "category": "vendor_fix", "details": "For more about Red Hat Developer Hub, see References links", "product_ids": [ "CSAFPID-5177667", "CSAFPID-5966218" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2026:6174" }, { "category": "workaround", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "CSAFPID-5177667", "CSAFPID-5966218", "CSAFPID-5966219", "CSAFPID-5966220" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1508265", "CSAFPID-1508266", "CSAFPID-5486263", "CSAFPID-5486265", "CSAFPID-5758399", "CSAFPID-5760886", "CSAFPID-5771995", "CSAFPID-5844093", "CSAFPID-5963615" ] } ], "title": "CVE-2026-3520" } ] }