{"id":"CVE-2026-104847","title":"ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents","summary":"ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes …","severity":"high","cvss":8.5,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-79"],"vendor":"ProseMirror","product":"prosemirror-view","affected":["prosemirror-view < 1.42.3"],"published":"2026-10-02","updated":"2026-10-02","sourceUpdated":"2026-10-02T17:17:03.363","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104847","references":[{"url":"https://github.com/ProseMirror/prosemirror-view/commit/20dc0a911a79f8fc6640dbbea5e7d68d3c4784b7","label":"security-advisories@github.com"},{"url":"https://github.com/ProseMirror/prosemirror-view/commit/2e91a612bbc1248e55b4f6061fc93fe459f977c1","label":"security-advisories@github.com"},{"url":"https://github.com/ProseMirror/prosemirror-view/security/advisories/GHSA-c8x8-7fp4-3x9w","label":"security-advisories@github.com"},{"url":"https://github.com/ProseMirror/prosemirror-view/security/advisories/GHSA-c8x8-7fp4-3x9w","label":"security-advisories@github.com"},{"url":"https://github.com/ProseMirror/prosemirror-view/security/advisories/GHSA-c8x8-7fp4-3x9w","label":"security-advisories@github.com"},{"url":"https://github.com/ProseMirror/prosemirror-view/security/advisories/GHSA-c8x8-7fp4-3x9w","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-02T16:57:07.727132Z"},"cvssSource":"cna","ingestedAt":"2026-10-02T16:22:59.528Z","slug":"CVE-2026-104847","body":"## Overview\n\nProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. When a user pastes the crafted HTML into an editor, the unvalidated context attributes can construct content that executes attacker-controlled JavaScript in the browser window containing the editor. This issue is fixed in version 1.42.3.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":46.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}