Vulnerability · Published Apr 9, 2026 · Assigned by VulnCheck

CVE-2026-35636OpenClaw 2026.3.11 < 2026.3.25 - Session Isolation Bypass via sessionId Resolution

Medium 6.5

In plain English

A medium-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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 80.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw versions 2026.3.11 through 2026.3.24 contain a session isolation bypass vulnerability where session_status resolves sessionId to canonical session keys before enforcing visibility checks. Sandboxed child sessions can exploit this to access parent or sibling sessions that should be blocked by explicit sessionKey restrictions.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.3.28	GHSA-q2qc-744p-66r2

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	2026.3.11 – before 2026.3.25

Weakness: CWE-696 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-q2qc-744p-66r2) vendor-advisory
Patch Commit patch
VulnCheck Advisory: OpenClaw 2026.3.11 < 2026.3.25 - Session Isolation Bypass via sessionId Resolution third-party-advisory