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TI-2026-29952 Aliases CVE-2026-41351GHSA-37v6-fxx8-xjmx

OpenClaw < 2026.3.31 - Webhook Replay Detection Bypass via Base64 Signature Re-encoding

Priority LOW 34CWE-294Published · Updated

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 · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-294.

Summary

OpenClaw before 2026.3.31 contains a replay detection bypass vulnerability in webhook signature handling that treats Base64 and Base64URL encoded signatures as distinct requests. Attackers can re-encode Telnyx webhook signatures to bypass replay detection while maintaining valid signature verification.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0033 26th percentileScored 2026-11-07
Fix Fixed OpenClaw (OpenClaw): 2026.3.31openclaw (npm): 2026.3.31

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

VendorProductAffected versionsFixed inStatusSource
OpenClawOpenClawbefore 2026.3.312026.3.31Patch availableCNA
—openclaw (npm)before 2026.3.312026.3.31Patch availableGHSA-37v6-fxx8-xjmx
  • OpenClaw VendorOpenClaw Affected before 2026.3.31 Fixed in 2026.3.31 Patch available CNA
  • openclaw (npm) Vendor— Affected before 2026.3.31 Fixed in 2026.3.31 Patch available GHSA-37v6-fxx8-xjmx

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*before 2026.3.31VulnerableOpenClaw
  • cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* Versions before 2026.3.31 Vulnerable ·OpenClaw

Remediation

  • Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.3.31
  • Fix · GHSA-37v6-fxx8-xjmx openclaw (npm) Fixed in 2026.3.31 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenClaw 2026.3.31

    18 records Highest priority Priority LOW 18 LOW

    Other records, highest priority first

    • TI-2026-29937 OpenClaw < 2026.3.31 - Arbitrary Hook Code Execution via OPENCLAW_BUNDLED_HOOKS_DIR Environment Variable OverridePriority LOW 38
    • TI-2026-29944 OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth ConcurrencyPriority LOW 37
    • TI-2026-29953 OpenClaw < 2026.3.31 - Remote Code Execution via Node Scope Gate BypassPriority LOW 36
    Show all 18 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41351
  2. 2026-10-03 Alias added: GHSA-37v6-fxx8-xjmx

References

Patch 1

Advisory 2

Other 2

  • 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
See all 574 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences