GHSA-r294-2894-92j3
OpenClaw has stored XSS in exported session HTML viewer via markdown/raw-HTML rendering
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
openclawnpmDescription
Summary
The exported session HTML viewer allowed stored XSS when untrusted session content included raw HTML markdown tokens or unescaped metadata fields.
Impact
Opening a crafted exported HTML session could execute attacker-controlled JavaScript in the viewer context. This can expose session content in the page and enable phishing or UI spoofing in the trusted export view.
Affected Packages / Versions
- Package:
openclaw(npm) - Affected versions:
<= 2026.2.22-2 - Patched version (released):
>= 2026.2.23
Technical Details
The exporter rendered markdown with marked.parse(...) and inserted HTML via innerHTML, but did not override the html renderer token path. Raw HTML (for example <img ... onerror=...>) was passed through. Additional tree/header metadata fields were interpolated without escaping in the export template.
Reproduction
- Create a session containing content like
<img src=x onerror=alert(1)>. - Export the session to HTML.
- Open the exported file.
- Observe script execution from injected content.
Remediation
- Added a
markedhtml(token)renderer override that escapes raw HTML tokens. - Escaped previously unescaped tree/header metadata fields in the export template.
- Added image MIME sanitization for exported data-URL image rendering.
- Added regression tests for markdown/token and metadata escaping paths.
Fix Commit(s)
f8524ec77a3999d573e6c6b8a5055bf35c49a2e6
Release Process Note
patched_versions is pre-set to the released version (>= 2026.2.23). This advisory now reflects released fix version 2026.2.23.
OpenClaw thanks @allsmog for reporting.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | openclaw | all versions | 2026.2.23 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update openclaw to 2026.2.23 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r294-2894-92j3 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-r294-2894-92j3 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-r294-2894-92j3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-r294-2894-92j3 in your dependencies?
O3 detects GHSA-r294-2894-92j3 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.