{ "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-2026-31868", "tracking": { "current_release_date": "2026-03-23T01:37:16.262892Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-31868", "initial_release_date": "2026-03-11T00:53:14.332442Z", "revision_history": [ { "date": "2026-03-11T00:53:14.332442Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-11T00:53:24.682509Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-11T18:26:58.953162Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-11T18:27:01.937798Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-11T18:38:49.905461Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (3).| CWES updated (1)." }, { "date": "2026-03-11T18:38:55.580532Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-11T21:56:47.728009Z", "number": "7", "summary": "References created (1)." }, { "date": "2026-03-12T14:57:34.121319Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-12T20:39:20.507176Z", "number": "9", "summary": "Unknown change." }, { "date": "2026-03-13T19:26:35.477478Z", "number": "10", "summary": "CVSS created.| Products created (1).| Product Identifiers created (5).| Products connected (4)." }, { "date": "2026-03-13T19:26:37.643860Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-19T15:29:31.774250Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-03-19T15:29:33.876635Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:32:34.652780Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." } ], "status": "interim", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/9.6.0-alpha1", "product": { "name": "vers:unknown/9.6.0-alpha1", "product_id": "CSAFPID-5815241", "product_identification_helper": { "cpe": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/9.6.0-alpha2", "product": { "name": "vers:unknown/9.6.0-alpha2", "product_id": "CSAFPID-5815242", "product_identification_helper": { "cpe": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/9.6.0-alpha3", "product": { "name": "vers:unknown/9.6.0-alpha3", "product_id": "CSAFPID-5815243", "product_identification_helper": { "cpe": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/<8.6.30", "product": { "name": "vers:unknown/<8.6.30", "product_id": "CSAFPID-5825005", "product_identification_helper": { "cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=9.0.0|<9.6.0", "product": { "name": "vers:unknown/>=9.0.0|<9.6.0", "product_id": "CSAFPID-5815240", "product_identification_helper": { "cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*" } } } ], "category": "product_name", "name": "parse-server" } ], "category": "vendor", "name": "Parse Platform" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<8.6.30", "product": { "name": "vers:unknown/<8.6.30", "product_id": "CSAFPID-5797632" } }, { "category": "product_version_range", "name": "vers:unknown/>=9.0.0<9.6.0-alpha.4", "product": { "name": "vers:unknown/>=9.0.0<9.6.0-alpha.4", "product_id": "CSAFPID-5797631" } } ], "category": "product_name", "name": "parse-server" } ], "category": "vendor", "name": "parse-community" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-31868", "cwe": { "id": "CWE-79", "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" }, "notes": [ { "category": "description", "text": "### Impact\n\nAn attacker can upload a file with a file extension or content type that is not blocked by the default configuration of the Parse Server `fileUpload.fileExtensions` option. The file can contain malicious code, for example JavaScript in an SVG or XHTML file. When the file is accessed via its URL, the browser renders the file and executes the malicious code in the context of the Parse Server domain. This is a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to steal session tokens, redirect users, or perform actions on behalf of other users.\n\nAffected file extensions and content types include `.svgz`, `.xht`, `.xml`, `.xsl`, `.xslt`, and content types `application/xhtml+xml` and `application/xslt+xml` for extensionless uploads. Uploading of `.html`, `.htm`, `.shtml`, `.xhtml`, and `.svg` files was already blocked.\n\n### Patches\n\nThe fix adds the missing file extensions and content types to the default value of the `fileUpload.fileExtensions` server option.\n\n### Workarounds\n\nConfigure the `fileUpload.fileExtensions` server option to block the affected file extensions and content types.\n\n### References\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-v5hf-f4c3-m5rv\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.4\n- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.30", "title": "github - https://github.com/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "description", "text": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.4 and 8.6.30, an attacker can upload a file with a file extension or content type that is not blocked by the default configuration of the Parse Server fileUpload.fileExtensions option. The file can contain malicious code, for example JavaScript in an SVG or XHTML file. When the file is accessed via its URL, the browser renders the file and executes the malicious code in the context of the Parse Server domain. This is a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to steal session tokens, redirect users, or perform actions on behalf of other users. Affected file extensions and content types include .svgz, .xht, .xml, .xsl, .xslt, and content types application/xhtml+xml and application/xslt+xml for extensionless uploads. Uploading of .html, .htm, .shtml, .xhtml, and .svg files was already blocked. This vulnerability is fixed in 9.6.0-alpha.4 and 8.6.30.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-31868" }, { "category": "description", "text": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.4 and 8.6.30, an attacker can upload a file with a file extension or content type that is not blocked by the default configuration of the Parse Server fileUpload.fileExtensions option. The file can contain malicious code, for example JavaScript in an SVG or XHTML file. When the file is accessed via its URL, the browser renders the file and executes the malicious code in the context of the Parse Server domain. This is a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to steal session tokens, redirect users, or perform actions on behalf of other users. Affected file extensions and content types include .svgz, .xht, .xml, .xsl, .xslt, and content types application/xhtml+xml and application/xslt+xml for extensionless uploads. Uploading of .html, .htm, .shtml, .xhtml, and .svg files was already blocked. This vulnerability is fixed in 9.6.0-alpha.4 and 8.6.30.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-31868" }, { "category": "description", "text": "### Impact\n\nAn attacker can upload a file with a file extension or content type that is not blocked by the default configuration of the Parse Server `fileUpload.fileExtensions` option. The file can contain malicious code, for example JavaScript in an SVG or XHTML file. When the file is accessed via its URL, the browser renders the file and executes the malicious code in the context of the Parse Server domain. This is a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to steal session tokens, redirect users, or perform actions on behalf of other users.\n\nAffected file extensions and content types include `.svgz`, `.xht`, `.xml`, `.xsl`, `.xslt`, and content types `application/xhtml+xml` and `application/xslt+xml` for extensionless uploads. Uploading of `.html`, `.htm`, `.shtml`, `.xhtml`, and `.svg` files was already blocked.\n\n### Patches\n\nThe fix adds the missing file extensions and content types to the default value of the `fileUpload.fileExtensions` server option.\n\n### Workarounds\n\nConfigure the `fileUpload.fileExtensions` server option to block the affected file extensions and content types.\n\n### References\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-v5hf-f4c3-m5rv\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.4\n- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.30", "title": "github - https://api.github.com/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "other", "text": "0.00051", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "6.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.8", "title": "NCSC Score" }, { "category": "other", "text": "The value of the most recent CVSS (V3) score, Is related to (a version of) an uncommon product, Is related to CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), Is related to an uncommon product vendor", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5797631", "CSAFPID-5797632", "CSAFPID-5815240", "CSAFPID-5815241", "CSAFPID-5815242", "CSAFPID-5815243", "CSAFPID-5825005" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31868" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-31868" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-31868" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/31xxx/CVE-2026-31868.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-31868" }, { "category": "external", "summary": "Source raw - 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-v5hf-f4c3-m5rv" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/parse-community/parse-server/releases/tag/8.6.30" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.4" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-v5hf-f4c3-m5rv" }, { "category": "external", "summary": "Reference - github", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31868" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5797631", "CSAFPID-5797632", "CSAFPID-5815240", "CSAFPID-5815241", "CSAFPID-5815242", "CSAFPID-5815243", "CSAFPID-5825005" ] } ], "title": "CVE-2026-31868" } ] }