# CVE-2026-105112 — nezhahq nezha

> As of 2026-10-03, CVE-2026-105112 is a MEDIUM-severity vulnerability in nezhahq nezha, CVSS v3.1 5.3. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-105112 as of 2026-10-03; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-10-03

## What is 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.

The record classifies CVE-2026-105112 under weakness class [CWE-362](https://intel.threadlinqs.com/cwe/CWE-362). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 2 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.3 — MEDIUM (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **CVSS v4.0 base score:** 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`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-03

## Is CVE-2026-105112 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **nezhahq**: nezha

## How to fix CVE-2026-105112

No vendor patch reference has been recorded for CVE-2026-105112 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-105112

No threat campaign in the Threadlinqs corpus currently references CVE-2026-105112, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-04.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-105112
Full detection coverage and IOCs for threats exploiting CVE-2026-105112 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp