{"id":"CVE-2026-27009","aliases":["GHSA-37gc-85xm-2ww6"],"url":"https://o3.security/vulnerability/CVE-2026-27009","summary":"OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inline script injection","details":"## Summary\nStored XSS in the OpenClaw Control UI when rendering assistant identity (name/avatar) into an inline `<script>` tag without script-context-safe escaping. A crafted value containing `</script>` could break out of the script tag and execute attacker-controlled JavaScript in the Control UI origin.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected versions: `<= 2026.2.14`\n- Fixed in: `>= 2026.2.15` (next release; fix is already merged on `main`)\n\n## Details\nThe gateway Control UI HTML response previously injected `assistantName` and `assistantAvatar` directly into an inline `<script>` block using `JSON.stringify(...)`. `JSON.stringify` does not prevent `</script>` from terminating the script element, enabling stored XSS if an operator/admin sets the assistant identity to a malicious string.\n\nOpenClaw’s Control UI is intended for local use only (see `SECURITY.md`); this advisory’s CVSS reflects a loopback-only/local-access deployment assumption.\n\n## Impact\nAn 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.\n\n## Fix\n- Removed inline script injection and serve bootstrap config from a JSON endpoint.\n- Added a restrictive Content Security Policy for the Control UI (`script-src 'self'`, no inline scripts).\n\n## Fix Commit(s)\n- `adc818db4a4b3b8d663e7674ef20436947514e1b`\n- `3b4096e02e7e335f99f5986ec1bd566e90b14a7e`\n\n## Release Process Note\nThis 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.\n\nThanks @Adam55A-code for reporting.","published":"2026-02-19T23:25:41.111Z","modified":"2026-11-04T02:51:07.025953931Z","cvss":{"score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.2.15"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/3b4096e02e7e335f99f5986ec1bd566e90b14a7e","label":"openclaw/openclaw@3b4096e"},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.15"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27009.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-37gc-85xm-2ww6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27009"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/3b4096e02e7e335f99f5986ec1bd566e90b14a7e"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/adc818db4a4b3b8d663e7674ef20436947514e1b"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T02:51:07.025953931Z"}}