OpenClaw's andbox browser noVNC observer lacked VNC authentication
The sandbox browser entrypoint launched x11vnc without authentication (-nopw) for noVNC observer sessions.
OpenClaw-managed runtime flow publishes the noVNC port to host loopback only (127.0.0.1), so default exposure is local to the host unless operators explicitly expose the port more broadly (or run the image standalone with broad port publishing).
Affected Packages / Versions
- Package:
docker/openclaw - Affected:
<= 2026.2.19-2 - Patched:
>= 2026.2.21
Technical details
scripts/sandbox-browser-entrypoint.shusedx11vnc ... -nopwfor noVNC observer flow.websockifyexposed noVNC for the container listener.- OpenClaw runtime (
src/agents/sandbox/browser.ts) already mapped host publish to loopback, but observer auth was missing.
Fix
- Require VNC password auth in the sandbox browser entrypoint (
x11vnc -rfbauth), replacing-nopw. - Generate per-container noVNC password in runtime and inject
OPENCLAW_BROWSER_NOVNC_PASSWORD. - Emit short-lived noVNC observer token URLs instead of sharing raw noVNC passwords in shared URLs.
- Keep loopback-only host port publish and bump sandbox browser security hash epoch.
- Add security audit findings for sandbox browser containers that publish ports on non-loopback interfaces.
Operational note: rebuild the sandbox browser image and recreate browser containers so existing containers pick up the fix.
Fix Commit(s)
621d8e1312482f122f18c43c72c67211b141da018c1518f0f3e0533593cd2dec3a46c9b746753661
Release Process Note
Patched version is pre-set to the planned next release (2026.2.21). After npm release, this advisory can be published without further field edits.
OpenClaw thanks @TerminalsandCoffee for reporting.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | openclaw | < 2026.2.21 | 2026.2.21 |
Referencias
- https://github.com/openclaw/openclaw/security/advisories/GHSA-25gx-x37c-7pph
- https://nvd.nist.gov/vuln/detail/CVE-2026-32064
- https://github.com/openclaw/openclaw/commit/621d8e1312482f122f18c43c72c67211b141da01
- https://github.com/openclaw/openclaw/commit/8c1518f0f3e0533593cd2dec3a46c9b746753661
- https://github.com/openclaw/openclaw
- https://www.vulncheck.com/advisories/openclaw-missing-vnc-authentication-in-sandbox-browser-novnc-observer
- Vector CVSS
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Debilidad (CWE)
CWE-287, CWE-862- Plataforma
- npm
- Paquete
openclaw- Publicada
- 03.03.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-25gx-x37c-7pph - CC BY 4.0
Historial de vulnerabilidades: openclaw
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 588
- Primera → última
- 02.2026 07.2026
- Sin corrección
- 9
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 20
- Alta 215
- Media 299
- Baja 54
Divulgaciones por año
- 2026: 588
-
OpenClaw's andbox browser noVNC observer lacked VNC authentication esta entrada
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