TI-2026-65119 Aliases CVE-2026-101086 GHSA-99pj-qr9x-4gmp

Nezha Dashboard before 2.3.5 Task Type Validation Bypass

LOW 31CWE-269Published 2026-09-27 · Updated 2026-09-28

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

Nezha Dashboard versions before 2.3.5 fail to restrict service monitor task types to supported probe types, allowing authenticated users with nezha:service:write scope to submit privileged task types through the service API. Attackers can deliver command execution or Agent configuration tasks to Agents within their authorization scope by exploiting the shared protobuf Task.Type namespace between service monitors and privileged operations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00321 25th percentileScored 2026-11-07

Fix Fixed nezha (nezhahq): 2.3.5

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

Vendor	Product	Affected versions	Fixed in	Status	Source
nezhahq	nezha	before 2.3.5	2.3.5	Patch available	CNA

nezha Vendornezhahq Affected before 2.3.5 Fixed in 2.3.5 Patch available CNA

Remediation

Fix · CNA nezha (nezhahq) Fixed in 2.3.5

Timeline

2026-10-02 Threatist record created from CVE-2026-101086
2026-10-03 Alias added: GHSA-99pj-qr9x-4gmp

References

Patch 1

Patch Commit

Advisory 1

GitHub Security Advisory (GHSA-grrw-fx36-fv32)

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