{ "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-2026-4601", "tracking": { "current_release_date": "2026-03-29T16:55:06.145905Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-4601", "initial_release_date": "2026-03-23T06:25:31.084839Z", "revision_history": [ { "date": "2026-03-23T06:25:31.084839Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-23T06:25:35.296839Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-23T06:38:50.645379Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-23T06:38:56.638418Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-23T07:35:13.514560Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-23T12:31:06.266347Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (5).| Product Identifiers created (2).| Product Remediations created (5).| References created (6).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-23T12:31:14.795419Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-23T22:27:59.796360Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-03-23T22:28:03.383103Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-24T02:20:04.277354Z", "number": "10", "summary": "Products connected (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-24T02:20:12.791904Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-24T21:33:51.508450Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-24T21:33:54.120878Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-29T16:55:01.890626Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1)." }, { "date": "2026-03-29T16:55:04.090743Z", "number": "15", "summary": "NCSC Score updated." } ], "status": "interim", "version": "15" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/2", "product": { "name": "vers:rpm/2", "product_id": "CSAFPID-1919968", "product_identification_helper": { "cpe": "cpe:/a:redhat:migration_toolkit_virtualization:2" } } } ], "category": "product_name", "name": "Migration Toolkit for Virtualization" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/3", "product": { "name": "vers:rpm/3", "product_id": "CSAFPID-1441200", "product_identification_helper": { "cpe": "cpe:/a:redhat:quay:3" } } } ], "category": "product_name", "name": "Red Hat Quay 3" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2159487" } } ], "category": "product_name", "name": "mtv-console-plugin-rhel9" } ], "category": "product_family", "name": "Migration Toolkit for Virtualization" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1455906" } } ], "category": "product_name", "name": "quay-rhel8" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5355695" } } ], "category": "product_name", "name": "quay-rhel9" } ], "category": "product_family", "name": "Red Hat Quay 3" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<11.1.1", "product": { "name": "vers:unknown/<11.1.1", "product_id": "CSAFPID-5895638", "product_identification_helper": { "cpe": "cpe:2.3:a:jsrsasign_project:jsrsasign:*:*:*:*:*:node.js:*:*" } } } ], "category": "product_name", "name": "jsrsasign" } ], "category": "vendor", "name": "jsrsasign Project" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4601", "cwe": { "id": "CWE-325", "name": "Missing Cryptographic Step" }, "notes": [ { "category": "description", "text": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4601" }, { "category": "description", "text": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4601.json" }, { "category": "description", "text": "A flaw was found in jsrsasign. An attacker can exploit a missing cryptographic step in the Digital Signature Algorithm (DSA) signing process, specifically within the KJUR.crypto.DSA.signWithMessageHash function. By manipulating the signature generation to force specific values, the library emits an invalid signature without retrying. This vulnerability allows an attacker to recover the private key used for signing.\nIMPORTANT: A flaw in the jsrsasign library allows for private key recovery due to a missing cryptographic step in the Digital Signature Algorithm (DSA) signing process. An attacker can manipulate signature generation within the KJUR.crypto.DSA.signWithMessageHash function to force specific values, enabling the recovery of the private key. This impacts Red Hat products utilizing jsrsasign, such as Migration Toolkit for Virtualization and Red Hat Quay.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4601.json" }, { "category": "description", "text": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.", "title": "github - https://api.github.com/advisories/GHSA-w8q8-93cx-6h7r" }, { "category": "other", "text": "0.00019", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "title": "CVSSV4" }, { "category": "other", "text": "8.8", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.1", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Redhat", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is product_remediation data available from source Redhat, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-1441200", "CSAFPID-1455906", "CSAFPID-1919968", "CSAFPID-2159487", "CSAFPID-5355695", "CSAFPID-5895638" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4601" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4601.json" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4601.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-w8q8-93cx-6h7r" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://gist.github.com/Kr0emer/93789fe6efe5519db9692d4ad1dad586" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/kjur/jsrsasign/commit/0710e392ec35de697ce11e4219c988ba2b5fe0eb" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/kjur/jsrsasign/pull/645" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370941" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-4601" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4601" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-w8q8-93cx-6h7r" } ], "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-1441200", "CSAFPID-1455906", "CSAFPID-1919968", "CSAFPID-2159487", "CSAFPID-5355695" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "baseScore": 8.7, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1441200", "CSAFPID-1455906", "CSAFPID-1919968", "CSAFPID-2159487", "CSAFPID-5355695", "CSAFPID-5895638" ] } ], "title": "CVE-2026-4601" } ] }