CVE-2026-48119

Nezha Monitoring: Authenticated agents can forge service-monitor results for other users' services

At a glance

Severity: HIGH 7.1
EPSS: EPSS 0.31 % · percentile 24 (2026-10-27)
State: PUBLISHED
Published: 2026-06-12
Updated: 2026-06-15
Assigner: GitHub_M
NVD status: Deferred

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L	GitHub_M
CVSS 3.1	HIGH 7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L	NVD · security-advisories@github.com (Secondary)

Weaknesses (CWE)

CWE-862

Advisories

GHSA-4g6j-g789-rghm — Nezha's authenticated agents can forge service-monitor results for other users' services
GO-2026-5119 — Nezha's authenticated agents can forge service-monitor results for other users' services in github.com/nezhahq/nezha

European references

ENISA EUVD · EUVD-2026-36595
GCVE · GCVE-0-2026-48119

Affected products

Product	Versions
nezhahq · nezha	affected >= 0.20.0, < 2.0.12

References

https://github.com/nezhahq/nezha/security/advisories/GHSA-4g6j-g789-rghm

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD