HighFix available
ProseMirror has a XSS vulnerability in prosemirror-view's paste handling
### Impact When a user pastes attacker-provided HTML into a ProseMirror editor component, this can cause attacker-controlled JavaScript code to run in the browser window containing the editor. ### Patches Version 1.42.3 adds validation that prevents this attack. ### Workarounds No known workarounds.
Announced Group revision 1
Original source ↗GHSA-c8x8-7fp4-3x9w
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-c8x8-7fp4-3x9w
prosemirror-view
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.42.3
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.42.3"
}
]
}
],
"package": {
"name": "prosemirror-view",
"purl": "pkg:npm/prosemirror-view",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-c8x8-7fp4-3x9w/GHSA-c8x8-7fp4-3x9w.json"
}
}
]- Related CVEs
- CVE-2026-104847
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #85820 · Revision 1
- Added to Heist Feed
- Publisher date