High severity · published Jun 12, 2026
CVE-2026-48119
Nezha Monitoring: Authenticated agents can forge service-monitor results for other users' services
7.1
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 0.20.0 to before version 2.0.12, authenticated agents can forge service-monitor results for other users' services. This issue has been patched in version 2.0.12.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
nezha · nezhahq
>= 0.20.0, < 2.0.12 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48119
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48119
github.com
https://github.com/nezhahq/nezha/security/advisories/GHSA-4g6j-g789-rghm
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