Medium severity · published Sep 27, 2026
CVE-2026-101085
Nezha before 2.3.8 Denial of Service via Alert Rule
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
Nezha before 2.3.8 fails to validate alert rule type and duration bounds, allowing authenticated non-administrator users to create malformed rules that trigger unrecovered panics in the alert evaluator goroutine. Attackers can submit a crafted alert rule via the POST /api/v1/alert-rule endpoint to crash the dashboard process, which persists the rule and causes repeated crashes on restart, disabling all monitoring and control plane functionality.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
nezha · nezhahq
before 2.3.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101085
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101085
vendor-advisory
https://github.com/nezhahq/nezha/security/advisories/GHSA-2qc6-x993-hjq9
third-party-advisory
https://www.vulncheck.com/advisories/nezha-before-2.3.8-denial-of-service-via-alert-rule
More from nezha
9.9
CVE-2026-62283
Nezha Monitoring: Cross-tenant terminal/file-manager session hijack via WebSocket stream UUID without ownership check
9.9
CVE-2026-46716
Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cron
9.8
CVE-2026-101090
Nezha through 2.2.3 Host Header Injection via OAuth2 redirect_uri
9.1
CVE-2026-53519
Nezha Monitoring: Pre-auth path traversal via /dashboard.. prefix confusion leaks jwt_secret_key
7.7
CVE-2026-46717
Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /api/v1/notification