Medium severity · published Jun 12, 2026
CVE-2026-49397
Nezha Monitoring: Private services (`EnableShowInService: false`) are enumerable via per-server endpoints, leaking name and timing data
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
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
>= 2.0.0, < 2.0.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49397
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49397
github.com
https://github.com/nezhahq/nezha/security/advisories/GHSA-vrmh-5mmx-hjwx
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