What is CVE-2026-42439?

CVE-2026-42439 is a high-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 8.5/10. Published 2026-05-05.

How severe is CVE-2026-42439?

High severity. CVSS v3 base score is 8.5 out of 10.

Auth bypass in Openclaw

CVE-2026-42439

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action…

Vulnerability class: Broken Access Control

EPSS: 0.000 (9.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Openclaw — versions 0, 2026.4.10

Weakness classification (CWE)

References

GitHub Security Advisory (GHSA-rj2p-j66c-mgqh) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.4.10 - SSRF Policy Bypass in Browser Tabs Action Routes (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-42439?: CVE-2026-42439 is a high-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 8.5/10. Published 2026-05-05.
How severe is CVE-2026-42439?: High severity. CVSS v3 base score is 8.5 out of 10.