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Fencer Intel
medium —

GHSA-pfv7-rr5m-qmv6 json

OpenClaw has auth inconsistency on local Browser Extension Relay /extension endpoint

published 8mo ago modified 8mo ago

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

### Summary

When the optional Chrome extension relay is enabled, `/extension` accepted unauthenticated WebSocket upgrades while `/json/*` and `/cdp` required auth.

### Affected Packages / Versions

- Package: `openclaw` (npm) - Affected: `<= 2026.2.17` - Latest published npm version at triage time: `2026.2.17`

### Impact

This is a local-only issue on loopback (`127.0.0.1`) and only applies when the extension relay feature is in use. A local process on the same machine could connect to `/extension` without the token and interfere with extension-relay behavior.

No remote network exploit path is involved.

### Fix

- Require gateway-token auth on both `/extension` and `/cdp` relay WebSocket endpoints. - Keep loopback/origin checks as defense-in-depth, not as authentication. - Use one token path in setup: `gateway.auth.token` / `OPENCLAW_GATEWAY_TOKEN`.

### Fix Commit(s)

- `7e54b6c96feb1a5c30884f2b32037b8dadd0e532`

OpenClaw thanks @tdjackey for reporting.

Patch / fix

  • npm openclaw 2026.2.19

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Affected packages

ecosystem package affected fixed in
npm openclaw
<2026.2.19
2026.2.19

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of openclaw/openclaw published their own advisory on GitHub. Reviewed sources take precedence over it.