Vulnerability · Published Apr 20, 2026 · Assigned by VulnCheck
CVE-2026-41296OpenClaw < 2026.3.31 - Sandbox Escape via TOCTOU Race in Remote FS Bridge readFile
High 8.2
In plain English
A high-severity security flaw in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.2%top 90.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenClaw before 2026.3.31 contains a time-of-check-time-of-use race condition in the remote filesystem bridge readFile function that allows sandbox escape. Attackers can exploit the separate path validation and file read operations to bypass sandbox restrictions and read arbitrary files.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | openclaw | 2026.3.31 | GHSA-9p3r-hh9g-5cmg |
Affected products (as reported)
Weakness: CWE-367 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-9p3r-hh9g-5cmg) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.3.31 - Sandbox Escape via TOCTOU Race in Remote FS Bridge readFile third-party-advisory