CVE-2026-27009CWE-79

OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inline script injection

Medium · published February 19, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
16.1
In the wild
Unconfirmed
What it is

OpenClaw is a personal AI assistant. Prior to version 2026.2.15, a atored XSS issue 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. Version 2026.2.15 removed inline script injection and serve bootstrap config from a JSON endpoint and added a restrictive Content Security Policy for the Control UI (`script-src 'self'`, no inline scripts).

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00255 · 16.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-19T23:25Z
EPSS history
Timeline
  • 19 FEB 23:25Z
    OpenClaw affected by Stored XSS in Control UI via unsanitized assistant name/avatar in inline script injection
    cvelistv5