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TI-2026-38833 Aliases CVE-2026-53837GHSA-gp79-m99v-gjmh

OpenClaw < 2026.5.6 - Missing Channel Type Validation in Mattermost Event Handlers

Priority LOW 27CWE-636Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions by sending crafted Mattermost events missing channel type information to process restricted content.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00189 8th percentileScored 2026-11-07
Fix Fixed OpenClaw (OpenClaw): 2026.5.6openclaw (npm): 2026.5.6

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

VendorProductAffected versionsFixed inStatusSource
OpenClawOpenClawbefore 2026.5.62026.5.6Patch availableCNA
—openclaw (npm)before 2026.5.62026.5.6Patch availableGHSA-gp79-m99v-gjmh
  • OpenClaw VendorOpenClaw Affected before 2026.5.6 Fixed in 2026.5.6 Patch available CNA
  • openclaw (npm) Vendor— Affected before 2026.5.6 Fixed in 2026.5.6 Patch available GHSA-gp79-m99v-gjmh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*before 2026.5.6VulnerableOpenClaw
  • cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* Versions before 2026.5.6 Vulnerable ·OpenClaw

Remediation

  • Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.5.6
  • Fix · GHSA-gp79-m99v-gjmh openclaw (npm) Fixed in 2026.5.6 Advisory →

Fixed in the same release

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

  • Release ·

    OpenClaw 2026.5.6

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-38824 OpenClaw < 2026.5.6 - Native Command Authorization Bypass via Owner-Command EnforcementPriority LOW 35
    • TI-2026-38831 OpenClaw < 2026.5.6 - Config-Write Enforcement Bypass in Feishu Dynamic-Agent BindingsPriority LOW 11
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53837
  2. 2026-10-03 Alias added: GHSA-gp79-m99v-gjmh

References

Advisory 2

Other 1

  • 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