{"id":"CVE-2021-25978","aliases":["EUVD-2021-2296","GHSA-4r9c-jghc-cx5m"],"status":"published","title":"Apostrophe - XSS","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00499,"percentile":0.43111,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-11-07T17:15:10Z","modified":"2026-10-20T10:54:34Z","fixes":[{"ecosystem":"npm","package":"apostrophe","fixed_in":["3.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"apostrophe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.63.0"},{"fixed":"3.4.0"}]}]},{"source":"osv","ecosystem":"npm","package":"apostrophe","ranges":[{"type":"SEMVER","events":[{"introduced":"2.63.0"},{"fixed":"3.4.0"}]}]}],"products":[{"vendor":"apostrophe","product":"apostrophe"},{"vendor":"apostrophecms","product":"apostrophe"},{"vendor":"apostrophecms","product":"apostrophecms"}],"references":[{"url":"https://github.com/apostrophecms/apostrophe/commit/c8b94ee9c79468f1ce28e31966cb0e0839165e59","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25978","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4r9c-jghc-cx5m"},{"url":"https://github.com/apostrophecms/apostrophe","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-25978","title":"Apostrophe - XSS","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-07T17:15:10Z","modified":"2025-04-30T15:52:43.284Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:59.802172Z"}],"euvd":[{"id":"EUVD-2021-2296","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-07T17:15:10Z","modified":"2025-04-30T15:52:43Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:51:59.026225Z"}],"ghsa":[{"id":"GHSA-4r9c-jghc-cx5m","title":"Cross-site Scripting in apostrophe","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-10T16:45:34Z","modified":"2023-02-01T05:06:30Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:39.086869Z"}],"nvd":[{"id":"CVE-2021-25978","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-07T18:15:07.62Z","modified":"2026-06-17T03:42:43.1Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:00.984108Z"}],"osv":[{"id":"CVE-2021-25978","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-07T18:15:07.62Z","modified":"2026-10-20T10:54:34.16806137Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"GHSA-4r9c-jghc-cx5m","title":"Cross-site Scripting in apostrophe","description":"Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.","status":"published","published":"2021-11-10T16:45:34Z","modified":"2023-11-08T04:05:19.675346Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:37.528068Z"}]}}