{"id":"CVE-2026-105829","revision":"63ea4d9a6f4745d29f07f7f5ccb3b4d6","records":[{"revision":"63ea4d9a6f4745d29f07f7f5ccb3b4d6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-105829","aliases":[],"title":"League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass","description":"League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone <script or <iframe line followed by a block supplying attributes like src or onload, executing stored scripts in viewers' browsers under default GFM settings.","state":0,"publishedAt":"2026-10-08T14:10:30.523+00:00","modifiedAt":"2026-10-10T03:05:39.203+00:00","affected":[{"ecosystem":"Vendor product","name":"commonmark","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"thephpleague\",\n                    \"product\": \"commonmark\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:composer/league/commonmark\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/thephpleague/commonmark/security/advisories/GHSA-97jj-33gv-5xf9","https://www.vulncheck.com/advisories/league-commonmark-1.3.0-before-2.10.2-stored-xss-via-disallowedrawhtml-bypass"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105829","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-105829","identifiers":["CVE-2026-105829"]},"retained":false,"historicalAffected":[]}],"coverage":[]}