{"id":"CVE-2026-65841","aliases":["EUVD-2026-51622","GHSA-45qg-252v-3f7p"],"status":"published","title":"Jodit has cross-site scripting (XSS) via \u003cscript\u003e nested in SVG that bypasses clean-html sanitization","description":"Jodit Editor is a WYSIWYG editor with a built-in file browser \u0026 image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00529,"percentile":0.45057,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-80"],"published":"2026-07-31T19:15:57Z","modified":"2026-10-28T02:30:54Z","fixes":[{"ecosystem":"npm","package":"jodit","fixed_in":["4.13.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"jodit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.13.6"}]}]},{"source":"osv","ecosystem":"npm","package":"jodit","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.13.6"}]}]}],"products":[{"vendor":"xdan","product":"jodit"}],"references":[{"url":"https://github.com/xdan/jodit/security/advisories/GHSA-45qg-252v-3f7p","tags":["x_refsource_CONFIRM","exploit","advisory","web"]},{"url":"https://github.com/xdan/jodit/commit/49a31f451f6b686f5610022a1d4406ee85138dc5","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/xdan/jodit/releases/tag/4.13.6","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/advisories/GHSA-45qg-252v-3f7p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65841.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65841","tags":["advisory"]},{"url":"https://github.com/xdan/jodit","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-65841","title":"Jodit has cross-site scripting (XSS) via \u003cscript\u003e nested in SVG that bypasses clean-html sanitization","description":"Jodit Editor is a WYSIWYG editor with a built-in file browser \u0026 image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.","status":"published","published":"2026-07-31T19:16:05.952Z","modified":"2026-07-31T20:05:10.59Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-51622","description":"Jodit Editor is a WYSIWYG editor with a built-in file browser \u0026 image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.","status":"published","published":"2026-07-31T19:16:05Z","modified":"2026-07-31T20:05:10Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:02:25.159179Z"}],"ghsa":[{"id":"GHSA-45qg-252v-3f7p","title":"Jodit has cross-site scripting (XSS) via \u003cscript\u003e nested in SVG that bypasses clean-html sanitization","description":"A `\u003cscript\u003e` element placed directly inside an `\u003csvg\u003e` (or MathML) container was not removed by Jodit's clean-html sanitizer.\n\nThe deny/allow tag filter compared `node.nodeName` against an upper-cased tag hash, but foreign (SVG/MathML) elements preserve their original-case node names — an SVG script reports `\"script\"`, not `\"SCRIPT\"` — so the default `denyTags` list (which includes `script`) did not match it. The script therefore survived in the editor value and serialized output, where it could execute when the content was loaded back into a page or editor.\n\n### Proof of concept\n\n```html\n\u003csvg xmlns=\"http://www.w3.org/2000/svg\" width=\"400\" height=\"400\" viewBox=\"0 0 124 124\"\u003e\n  \u003crect width=\"124\" height=\"124\" rx=\"24\" fill=\"#000000\"\u003e\u003c/rect\u003e\n  \u003cscript type=\"text/javascript\"\u003ealert(document.domain);\u003c/script\u003e\n\u003c/svg\u003e\n```\n\nLoad the payload into the editor (e.g. via source mode) and the `\u003cscript\u003e` is preserved in `editor.value` and executes.\n\n### Impact\n\nStored / DOM cross-site scripting. An application that persists editor output and later renders or re-opens it in Jodit can have attacker-supplied script run in a victim's (e.g. an administrator's) authenticated browser context.\n\n### Patch\n\nFixed in **4.13.6**: the deny/allow lookup now normalises the tag name to upper case before matching, so a foreign namespace can no longer bypass the filter, while `allowTags` is still honoured.\n\n### Workaround\n\nUpgrade to 4.13.6 or later. Server-side sanitization of stored HTML mitigates in the interim.\n\n### Credit\n\nReported by Roman Kis (@CrownKingClown).","status":"published","published":"2026-07-31T19:15:57Z","modified":"2026-07-31T19:15:58Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:40:55.903445Z"}],"nvd":[{"id":"CVE-2026-65841","description":"Jodit Editor is a WYSIWYG editor with a built-in file browser \u0026 image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.","status":"published","published":"2026-07-31T20:16:53.967Z","modified":"2026-10-23T23:10:00.157Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:12:34.290716Z"}],"osv":[{"id":"CVE-2026-65841","title":"Jodit has cross-site scripting (XSS) via \u003cscript\u003e nested in SVG that bypasses clean-html sanitization","description":"Jodit Editor is a WYSIWYG editor with a built-in file browser \u0026 image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.","status":"published","published":"2026-07-31T19:16:05.952Z","modified":"2026-10-28T02:30:54.461389715Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T15:45:14.46177Z"},{"id":"GHSA-45qg-252v-3f7p","title":"Jodit has cross-site scripting (XSS) via \u003cscript\u003e nested in SVG that bypasses clean-html sanitization","description":"A `\u003cscript\u003e` element placed directly inside an `\u003csvg\u003e` (or MathML) container was not removed by Jodit's clean-html sanitizer.\n\nThe deny/allow tag filter compared `node.nodeName` against an upper-cased tag hash, but foreign (SVG/MathML) elements preserve their original-case node names — an SVG script reports `\"script\"`, not `\"SCRIPT\"` — so the default `denyTags` list (which includes `script`) did not match it. The script therefore survived in the editor value and serialized output, where it could execute when the content was loaded back into a page or editor.\n\n### Proof of concept\n\n```html\n\u003csvg xmlns=\"http://www.w3.org/2000/svg\" width=\"400\" height=\"400\" viewBox=\"0 0 124 124\"\u003e\n  \u003crect width=\"124\" height=\"124\" rx=\"24\" fill=\"#000000\"\u003e\u003c/rect\u003e\n  \u003cscript type=\"text/javascript\"\u003ealert(document.domain);\u003c/script\u003e\n\u003c/svg\u003e\n```\n\nLoad the payload into the editor (e.g. via source mode) and the `\u003cscript\u003e` is preserved in `editor.value` and executes.\n\n### Impact\n\nStored / DOM cross-site scripting. An application that persists editor output and later renders or re-opens it in Jodit can have attacker-supplied script run in a victim's (e.g. an administrator's) authenticated browser context.\n\n### Patch\n\nFixed in **4.13.6**: the deny/allow lookup now normalises the tag name to upper case before matching, so a foreign namespace can no longer bypass the filter, while `allowTags` is still honoured.\n\n### Workaround\n\nUpgrade to 4.13.6 or later. Server-side sanitization of stored HTML mitigates in the interim.\n\n### Credit\n\nReported by Roman Kis (@CrownKingClown).","status":"published","published":"2026-07-31T19:15:57Z","modified":"2026-07-31T19:41:43.225459Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T15:46:36.434231Z"}]}}