Medium

OpenClaw's browser-origin WebSocket auth hardening gap could enable loopback password brute-force chains

  • Disclosed: 03.03.2026
  • Updated: 11.10.2026 10:22

This issue is a browser-origin WebSocket auth chain on local loopback deployments using password auth. It is serious, but conditional: an attacker must get the user to open a malicious page and then successfully guess the gateway password.

Context and Preconditions

OpenClaw’s web/gateway surface is designed for local use and trusted-operator workflows. In affected versions, a browser-origin client could combine three behaviors:

  • Origin checks not enforced for some non-Control-UI WebSocket client IDs.
  • Loopback auth attempts exempt from password-failure throttling.
  • Silent local pairing path available to browser-origin non-Control-UI clients.

Successful exploitation requires all of the following:

  • Gateway reachable on loopback (default).
  • Password auth mode in use.
  • Victim opens attacker-controlled web content.
  • Password is guessable within feasible brute-force/dictionary attempts.

Practical Impact

If the password is guessed, an attacker can establish an authenticated operator WebSocket session and invoke control-plane methods available to that role. This is not an unauthenticated internet-exposed RCE class issue by itself; it is a local browser-origin auth-hardening gap with meaningful impact under the conditions above.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected versions: <=2026.2.24 (latest published npm version as of February 26, 2026)
  • Patched versions : >=2026.2.25

Fix Commit(s)

  • c736f11a16d6bc27ea62a0fe40fffae4cb071fdb

Fix Details

  • Enforce browser-origin checks for direct browser WebSocket clients beyond Control UI/Webchat (trusted-proxy forwarded flows remain supported).
  • Apply browser-origin auth failure throttling with loopback exemption disabled.
  • Block silent auto-pairing for non-Control-UI browser-origin clients.

Release Process Note

patched_versions is pre-set to the planned next npm release (2026.2.25) so once that release is published, the advisory is published.

OpenClaw thanks @luz-oasis for reporting.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package openclaw < 2026.2.25 2026.2.25

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-287, CWE-307, CWE-346
Platform
npm
Package
openclaw
Disclosed
03.03.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-jmmg-jqc7-5qf4 - CC BY 4.0

Vulnerability history: openclaw

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (589) in the archive
Total entries
589
First → latest
02.2026 10.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 20
  • High 215
  • Medium 300
  • Low 54

Disclosures per year

  1. 2026: 589
Severity:
  1. OpenClaw's browser-origin WebSocket auth hardening gap could enable loopback password brute-force chains this entry
    Medium · 7.5 CVE-2026-32025 < 2026.2.25 2026.2.25
  2. High · 8.8 CVE-2026-53811 < 2026.5.7 2026.5.7
  3. High · 8.8 CVE-2026-53806 < 2026.5.12 2026.5.12
  4. High · 7.8 CVE-2026-53813 < 2026.4.25 2026.4.25
  5. High · 7.5 CVE-2026-53834 < 2026.4.27 2026.4.27
  6. Critical CVE-2026-34507 < 2026.4.29 2026.4.29
  7. High CVE-2026-53823 < 2026.5.3 2026.5.3
  8. High · 8.4 CVE-2026-53814 < 2026.5.20 2026.5.20
  9. High · 6.5 CVE-2026-53815 < 2026.5.19 2026.5.19
  10. High · 8.1 CVE-2026-53849 < 2026.5.7 2026.5.7
  11. High · 8.1 CVE-2026-53857 < 2026.5.3 2026.5.3
  12. High · 8.1 CVE-2026-53866 < 2026.5.12 2026.5.12
  13. High · 8.1 CVE-2026-53864 < 2026.5.26 2026.5.26
  14. Critical · 9.8 CVE-2026-44109 < 2026.4.15 2026.4.15
  15. Critical · 8.1 CVE-2026-43585 < 2026.4.15 2026.4.15
  16. High · 8.8 CVE-2026-43530 >= 2026.2.23, < 2026.4.12 2026.4.12
  17. High · 8.8 CVE-2026-42434 >= 2026.4.5, < 2026.4.10 2026.4.10
  18. High · 7.5 CVE-2026-42437 >= 2026.4.9, < 2026.4.10 2026.4.10
Show more (20) Showing 61 of 236

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