Information disclosure in nezhahq nezha
Priority MEDIUM 63CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-285.
Summary
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.0 to before version 2.0.14, private services (`EnableShowInService: false`) are enumerable via per-server endpoints, leaking name and timing data. This issue has been patched in version 2.0.14.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd percentileScored 2026-11-07
Fix Fixed nezha (nezhahq): 2.0.14github.com/nezhahq/nezha (Go): 2.0.14
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nezhahq | nezha | 2.0.0 to before 2.0.14 | 2.0.14 | Patch available | CNA |
| — | github.com/nezhahq/nezha (Go) | 2.0.0 to before 2.0.14 | 2.0.14 | Patch available | GHSA-vrmh-5mmx-hjwx |
- nezha Vendornezhahq Affected 2.0.0 to before 2.0.14 Fixed in 2.0.14 Patch available CNA
- github.com/nezhahq/nezha (Go) Vendor— Affected 2.0.0 to before 2.0.14 Fixed in 2.0.14 Patch available GHSA-vrmh-5mmx-hjwx
Remediation
- Fix · CNA nezha (nezhahq) Fixed in 2.0.14
- Fix · GHSA-vrmh-5mmx-hjwx github.com/nezhahq/nezha (Go) Fixed in 2.0.14 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-49397
- 2026-10-03 Alias added: GHSA-vrmh-5mmx-hjwx
References
More nezhahq vulnerabilities
- 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
Sources
- CVE-2026-49397 · CVE Program
- CVE-2026-49397 · NVD
- FIRST EPSS
- GHSA-vrmh-5mmx-hjwx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences