What is CVE-2026-43582?

CVE-2026-43582 is a medium-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-05-06.

How severe is CVE-2026-43582?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Openclaw

CVE-2026-43582

OpenClaw before 2026.4.10 contains a server-side request forgery vulnerability in browser navigation policy that allows attackers to bypass hostname validation through DNS rebinding attacks. Attackers can exploit inconsistent hostname reso…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (9.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Openclaw — versions 0, 2026.4.10

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

Patch Commit (Patch, patch)
GitHub Security Advisory (GHSA-xq94-r468-qwgj) (vendor-advisory, Mitigation, Vendor Advisory)
VulnCheck Advisory: OpenClaw < 2026.4.10 - DNS Rebinding SSRF via Hostname Validation Bypass (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-43582?: CVE-2026-43582 is a medium-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-05-06.
How severe is CVE-2026-43582?: Medium severity. CVSS v3 base score is 6.3 out of 10.