CVE-2026-43529

Description

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.

CVSS v3.1 Score

2.5

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-367 CWE-367

Affected Products

Vendor	Product	Versions
openclaw	openclaw	< 2026.4.10

References

Advisories & Patches

https://github.com/openclaw/openclaw/commit/b024fae9e5df43e9b69b2daebb72be3469d52e91 https://github.com/openclaw/openclaw/security/advisories/GHSA-gj9q-8w99-mp8j

Other References

https://www.vulncheck.com/advisories/openclaw-time-of-check-time-of-use-toctou-race-condition-in-exec-script-preflight-validator

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 2.5 (LOW).

How severe is CVE-2026-43529? +

CVE-2026-43529 has a CVSS v3.1 score of 2.5 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43529? +

CVE-2026-43529 affects products from openclaw, specifically: openclaw. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43529? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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