Medium severity · published Oct 3, 2026
CVE-2026-105112
Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints
5.3
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
nezha · nezhahq
1.8.0 before 2.3.13 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105112
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105112
vendor-advisory
https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf
third-party-advisory
https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints
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