# CVE-2026-112212 — GitLab

> As of 2026-10-21, CVE-2026-112212 is a HIGH-severity vulnerability in GitLab, CVSS v3.1 7.5. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-112212, most recently “Critical GitLab Flaw CVE-2026-110264 (CVSS 10.0): Unauthenticated RCE via Onigmo Regex Integer Overflow Across GitLab 7.0-19.5”.

**Last updated:** 2026-10-21

## What is CVE-2026-112212?

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have poisoned a shared cache's OAuth/OIDC discovery document to redirect certain flows to an externally controlled server, due to improper trust of user-supplied values when constructing endpoint URLs in cached discovery responses.

The record classifies CVE-2026-112212 under weakness class [CWE-444](https://intel.threadlinqs.com/cwe/CWE-444). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 1 day ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-21

## Is CVE-2026-112212 being exploited?

No public exploitation evidence for CVE-2026-112212 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-10-21. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

## Affected products and versions

- [GitLab](https://intel.threadlinqs.com/vendors/gitlab): GitLab

## How to fix CVE-2026-112212

No vendor patch reference has been recorded for CVE-2026-112212 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-2026-112212

1 tracked threat in the Threadlinqs corpus references CVE-2026-112212, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Critical GitLab Flaw CVE-2026-110264 (CVSS 10.0): Unauthenticated RCE via Onigmo Regex Integer Overflow Across GitLab 7.0-19.5](https://intel.threadlinqs.com/threat/TL-2026-4063) — CRITICAL · 2026-10-21

## Sources

Enriched from CVE.org, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-22.

**Other references**

- [gitlab.com](https://gitlab.com/gitlab-org/gitlab/-/work_items/627499)
- [docs.gitlab.com](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-112212
Full detection coverage and IOCs for threats exploiting CVE-2026-112212 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp