Auth bypass in Openclaw
CVE-2026-32039
OpenClaw versions prior to 2026.2.22 contain an authorization bypass vulnerability in the toolsBySender group policy matching that allows attackers to inherit elevated tool permissions through identifier collision attacks. Attackers can exploit untyped sender keys by forcing collisions with mutable identity values such as senderName or senderUsername to bypass sender-authorization policies and gain unauthorized access to privileged tools.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (8.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N.
Affected products
- Openclaw — versions 0, 2026.2.22
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Vendor Advisory, third-party-advisory)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-32039?
- CVE-2026-32039 is a medium-severity vulnerability in Openclaw, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.9/10. Published 2026-03-19.
- How severe is CVE-2026-32039?
- Medium severity. CVSS v3 base score is 5.9 out of 10.