Session Isolation Bypass Vulnerability in OpenClaw by OpenClaw
CVE-2026-35636

7.1HIGH

Key Information:

Vendor

Openclaw

Status
Openclaw
Vendor
CVE Published:
9 April 2026

What is CVE-2026-35636?

OpenClaw versions 2026.3.11 through 2026.3.24 are vulnerable to a session isolation bypass issue. The vulnerability arises because the session_status function resolves sessionId to canonical session keys before implementing necessary visibility checks. This design flaw can be exploited by sandboxed child sessions, allowing them to access parent or sibling sessions that should be restricted due to explicit sessionKey constraints, potentially compromising sensitive information and system integrity.

Affected Version(s)

OpenClaw 2026.3.11

References

https://github.com/openclaw/openclaw/security/advisories/...
third-party-advisory
https://github.com/openclaw/openclaw/commit/d9810811b6c3c...
patch
https://www.vulncheck.com/advisories/openclaw-session-iso...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nathan (@nexrin)
KeenSecurityLab
.