# CVE-2026-5296 — GitLab

> As of 2026-05-27, CVE-2026-5296 is a MEDIUM-severity vulnerability in GitLab, CVSS v3.1 4.3, EPSS 0.3% (24.8th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-5296, most recently “GitLab CE/EE Security Patch Release (19.0.1 / 18.11.4 / 18.10.7) — CVE-2026-4868 GitLab Duo AI Workflow Runner Identity Confusion (CVSS 8.2) Plus DoS and Broken-Authorization Flaws”.

**Last updated:** 2026-05-27

## What is CVE-2026-5296?

GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.

The record classifies CVE-2026-5296 under weakness class [CWE-862](https://intel.threadlinqs.com/cwe/CWE-862). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 154 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 4.3 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 24.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-05-27

## Is CVE-2026-5296 being exploited?

It currently carries a trending score of 11 in the Threadlinqs vulnerability feed.

## Affected products and versions

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

## How to fix CVE-2026-5296

No vendor patch reference has been recorded for CVE-2026-5296 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-2026-5296

1 tracked threat in the Threadlinqs corpus references CVE-2026-5296, either in the campaign’s CVE list or as an indicator on the campaign record.

- [GitLab CE/EE Security Patch Release (19.0.1 / 18.11.4 / 18.10.7) — CVE-2026-4868 GitLab Duo AI Workflow Runner Identity Confusion (CVSS 8.2) Plus DoS and Broken-Authorization Flaws](https://intel.threadlinqs.com/threat/TL-2026-0634) — HIGH · 2026-05-30

## Sources

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

**Exploit and proof of concept**

- [hackerone.com — technical description](https://hackerone.com/reports/3626303)

**Other references**

- [gitlab.com](https://gitlab.com/gitlab-org/gitlab/-/work_items/595423)
- [about.gitlab.com](https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-5296
Full detection coverage and IOCs for threats exploiting CVE-2026-5296 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp