OpenClaw before 2026.8.1 Authentication Bypass via Session Reset
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
OpenClaw (npm package openclaw) versions >= 2026.5.2 and < 2026.8.1 contain an incorrect authorization vulnerability in WhatsApp group handling. A group sender who is admitted for ordinary messages but denied by commands.allowFrom or owner command authorization can issue the /new <model> command to reset the shared group session and persist a provider and model override. This allows a command-denied group member to select a provider and model already permitted by the operator for subsequent turns in the shared group session, potentially changing provider routing, cost, data flow, or availability. It does not allow adding a new provider or host command execution. The issue is fixed in version 2026.8.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.8.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenClaw 2026.8.1
40 records Highest priority Priority MEDIUM 2 MEDIUM, 38 LOW
Other records, highest priority first
- TI-2026-64719 OpenClaw before 2026.8.1 Resource Exhaustion via WebSocket UpgradePriority MEDIUM 43
- TI-2026-64727 OpenClaw before 2026.8.1 DNS Rebinding via CDP HostnamePriority MEDIUM 40
- TI-2026-64728 OpenClaw before 2026.8.1 Unauthorized Command Job AccessPriority LOW 39
Timeline
- 2026-10-02 Threatist record created from CVE-2026-100556
- 2026-10-03 Alias added: GHSA-8hvw-855c-9wjw
References
More OpenClaw vulnerabilities
- TI-2026-07590 Crabbox < v0.12.0 Environment Variable Information Disclosure CVSS 4.0CRITICAL 9.3
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
- TI-2026-65190 OpenClaw Windows Node before 2026.7.1 Remote Code Execution via system.execApprovals.set CVSS 4.0HIGH 8.7
- TI-2026-65188 OpenClaw Windows Node before 2026.7.1 Authorization Bypass CVSS 4.0HIGH 8.7
- TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
- TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
Sources
- CVE-2026-100556 · CVE Program
- CVE-2026-100556 · NVD
- FIRST EPSS
- GHSA-8hvw-855c-9wjw · GitHub Advisory Database · CC BY 4.0
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