OpenClaw < 2026.3.22 - XFF Loopback Spoofing Bypass in Canvas Authentication and Rate Limiter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-290.
Summary
OpenClaw before 2026.3.22 contains an authentication bypass vulnerability in the X-Forwarded-For header processing when trustedProxies is configured, allowing attackers to spoof loopback hops. Remote attackers can inject forged forwarding headers to bypass canvas authentication and rate-limiting protections by masquerading as loopback clients.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | OpenClaw | before 2026.3.22 | 2026.3.22 | Patch available | CNA |
| — | openclaw (npm) | before 2026.3.22 | 2026.3.22 | Patch available | GHSA-844j-xrrq-wgh4 |
- OpenClaw VendorOpenClaw Affected before 2026.3.22 Fixed in 2026.3.22 Patch available CNA
- openclaw (npm) Vendor— Affected before 2026.3.22 Fixed in 2026.3.22 Patch available GHSA-844j-xrrq-wgh4
Remediation
- Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.3.22
- Fix · GHSA-844j-xrrq-wgh4 openclaw (npm) Fixed in 2026.3.22 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenClaw 2026.3.22
11 records Highest priority Priority LOW 11 LOW
Other records, highest priority first
- TI-2026-27744 OpenClaw < 2026.3.22 - Arbitrary Code Execution via Unvalidated WebView JavascriptInterfacePriority LOW 39
- TI-2026-27753 OpenClaw < 2026.3.22 - Unauthorized Action Execution via Callback DispatchPriority LOW 37
- TI-2026-27767 OpenClaw < 2026.3.22 - Allowlist Bypass via Unregistered Time Dispatch WrapperPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2026-35656
- 2026-10-03 Alias added: GHSA-844j-xrrq-wgh4
References
More Openclaw vulnerabilities
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read 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
- TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
- TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
- TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
Sources
- CVE-2026-35656 · CVE Program
- CVE-2026-35656 · NVD
- FIRST EPSS
- GHSA-844j-xrrq-wgh4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences