CVE-2026-105112
6
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
Nezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem. Attackers can concurrently call the notification-group and batch-delete endpoints with oversized id lists to widen the race and close an ABBA cycle, permanently killing alert delivery until restart.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| nezhahq | nezha | 1.8.0 < 2.3.13 | affected |
| nezhahq | nezha | 2.3.13 | unaffected |
Weaknesses
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
References
- https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf
- https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints
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