Vulnerability in Openclaw
CVE-2026-43529
OpenClaw before 2026.4.10 contains a time-of-check-time-of-use vulnerability in the validateScriptFileForShellBleed function that allows local attackers to bypass workspace boundary checks. An attacker with workspace write access can race-condition swap the target file between validation and preflight read, causing the validator to inspect a different file identity than the one that passed the initial boundary check.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (0.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Openclaw — versions 0, 2026.4.10
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-gj9q-8w99-mp8j (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/b024fae9e5df43e9b69b2daebb72be3469d52e91 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-time-of-check-time-of-use-toctou-race-con… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-43529?
- CVE-2026-43529 is a low-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 2.5/10. Published 2026-05-05.
- How severe is CVE-2026-43529?
- Low severity. CVSS v3 base score is 2.5 out of 10.