What is CVE-2026-105112?

CVE-2026-105112 is a medium-severity vulnerability in Nezhahq Nezha, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-10-03.

How severe is CVE-2026-105112?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Nezhahq Nezha

CVE-2026-105112

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.

Vulnerability class: Race Condition

Published 2026-10-03.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nezhahq Nezha

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf (vendor-advisory)
www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notific… (third-party-advisory)

Frequently asked questions

What is CVE-2026-105112?: CVE-2026-105112 is a medium-severity vulnerability in Nezhahq Nezha, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-10-03.
How severe is CVE-2026-105112?: Medium severity. CVSS v3 base score is 5.3 out of 10.