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GHSA-37gc-85xm-2ww6

MediumCVSS 5.8 / 10
Published Feb 18, 2026·Last modified Feb 20, 2026
Affected Components(0)

No affected components available

Description

Summary

Stored 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.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected versions: <= 2026.2.14
  • Fixed in: >= 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 <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.

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.

Risk Scores
Base Score
5.8

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.

Threat Intelligence
5.3

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.23%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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