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TI-2026-67488 Aliases CVE-2026-105113GHSA-2w9f-mhfg-hq53

Nezha 1.8.0 before 2.3.13 Denial of Service via Notification Mutex Deadlock

Priority MEDIUM 64CWE-667Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-667 and the CVSS impact.

Summary

Nezha Dashboard from 1.8.0 before 2.3.13 contains an improper locking vulnerability where a non-deferred mutex unlock leaks on a nil-map panic path. Any authenticated non-admin member can issue four notification API calls to permanently deadlock the alerting subsystem, then exhaust memory with blocking requests.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed nezha (nezhahq): 2.3.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
nezhahqnezha1.8.0 to before 2.3.132.3.13Patch availableCNA
  • nezha Vendornezhahq Affected 1.8.0 to before 2.3.13 Fixed in 2.3.13 Patch available CNA

Remediation

  • Fix · CNA nezha (nezhahq) Fixed in 2.3.13

Fixed in the same release

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

  • Release ·

    nezhahq nezha 2.3.13

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-67487 Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpointsPriority MEDIUM 60
    Show all 2 records →

Timeline

  1. 2026-10-03 Threatist record created from CVE-2026-105113
  2. 2026-10-03 Alias added: GHSA-2w9f-mhfg-hq53
  3. 2026-10-04 Priority changed: MEDIUM → LOW
  4. 2026-10-05 CISA SSVC decision points changed
  5. 2026-10-05 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2026-65123 Nezha through 2.2.3 Host Header Injection via OAuth2 redirect_uri CVSS 4.0CRITICAL 9.3
  • TI-2026-34341 Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cron CVSS 3.1CRITICAL 9.9
  • TI-2026-34342 Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /api/v1/notification CVSS 3.1HIGH 7.7
  • TI-2026-38597 Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection CVSS 3.1MEDIUM 6.8
  • TI-2026-75131 Memory exhaustion in Nezha file manager WebSocket endpoint CVSS 4.0HIGH 7.1
  • TI-2026-75130 Nezha WebSocket transfer endpoint flaw enables denial of service CVSS 4.0HIGH 7.1
See all 29 →

Sources

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