---
title: "CVE-2026-15723: GitLab CE/EE - Authentication Bypass"
description: "GitLab CE/EE >= 10.1 and < 19.3.6, 19.4 >= 19.4 and < 19.4.3, 19.5 >= 19.5 and < 19.5.1 contains an authentication bypass caused by improper input sanitization in LDAP email lookup during OmniAuth identity linking, letting authenticated users take over LDAP-backed accounts without user interaction."
url: https://panop.io/threat-heartbeat/CVE-2026-15723/
---

# CVE-2026-15723 GitLab CE/EE - Authentication Bypass

GitLab CE/EE >= 10.1 and < 19.3.6, 19.4 >= 19.4 and < 19.4.3, 19.5 >= 19.5 and < 19.5.1 contains an authentication bypass caused by improper input sanitization in LDAP email lookup during OmniAuth identity linking, letting authenticated users take over LDAP-backed accounts without user interaction.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.33% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-15723)

## Details

Type

Authentication Bypass

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Published

22 October 2026

Updated

23 October 2026

Weakness

[CWE-90](https://cwe.mitre.org/data/definitions/90.html)

## Vendor fix

Update to GitLab CE/EE 19.3.6, 19.4.3, 19.5.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-15723](https://nvd.nist.gov/vuln/detail/CVE-2026-15723)
- [https://gitlab.com/gitlab-org/gitlab/-/work\_items/605977](https://gitlab.com/gitlab-org/gitlab/-/work_items/605977)
- [https://hackerone.com/reports/3852192](https://hackerone.com/reports/3852192)
- [https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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