GitHub Advisoryadvisory · npm
GHSA-37gc-85xm-2ww6 OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inline script injection
MEDIUM
Official page ↗
- Aliases
- CVE-2026-27009
- Ecosystem
- npm
- Packages
- openclaw
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-79
- Reviewed
- 2026-02-18
Affected packages
• npm openclaw: < 2026.2.15 → fixed in 2026.2.15
Description
Summary
Stored XSS in the OpenClaw Control UI when rendering assistant identity (name/avatar) into an inline `` tag without script-context-safe escaping. A crafted value containing `` could break out of the script tag and execute attacker-controlled JavaScript in the Control UI origin.
Affected Packages / Versions
• Package: `openclaw` (npm)
• Affected versions: `= 2026.2.15` (next release; fix is already merged on `main`)
Details
The gateway Control UI HTML response previously injected `assistantName` and `assistantAvatar` directly into an inline `` block using `JSON.stringify(...)`. `JSON.stringify` does not prevent `` from terminating the script element, enabling stored XSS if an operator/admin sets the assistant identity to a malicious string.
OpenClaw’s Control UI is intended for local use only (see `SECURITY.md`); this advisory’s CVSS reflects a loopback-only/local-access deployment assumption.
Impact
An attacker with the ability to set assistant identity values (config or agent identity) could cause JavaScript execution for Control UI visitors, enabling token/session theft and privileged actions in the UI.
Fix
• Removed inline script injection and serve bootstrap config from a JSON endpoint.
• Added a restrictive Content Security Policy for the Control UI (`script-src 'self'`, no inline scripts).
Fix Commit(s)
• `adc818db4a4b3b8d663e7674ef20436947514e1b`
• `3b4096e02e7e335f99f5986ec1bd566e90b14a7e`
Release Process Note
This advisory pre-sets the patched version to the planned next release (`2026.2.15`). Once that version is published to npm, this advisory can be published without further edits.
Thanks @Adam55A-code for reporting.
Related
Alias · CVE (1)
- CVE-2026-27009 OpenClaw is a personal AI assistant. vulnerability
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-37gc-85xm-2ww6 web
- https://nvd.nist.gov/vuln/detail/CVE-2026-27009 advisory
- https://github.com/openclaw/openclaw/commit/3b4096e02e7e335f99f5986ec1bd566e90b14a7e web
- https://github.com/openclaw/openclaw/commit/adc818db4a4b3b8d663e7674ef20436947514e1b web
- https://github.com/openclaw/openclaw package
- https://github.com/openclaw/openclaw/releases/tag/v2026.2.15 web