CVE-2026-5377
Incorrect Authorization in GitLab
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that could have allowed an authenticated user to access titles of confidential or private issues in public projects due to improper access control in the issue description rendering process.
INFO
Published Date :
April 22, 2026, 5:16 p.m.
Last Modified :
April 23, 2026, 8:37 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update GitLab to 18.11.1 or later.
- Verify access controls for issue visibility.
- Review GitLab issue rendering process.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5377.
| URL | Resource |
|---|---|
| https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/ | Release Notes Vendor Advisory |
| https://gitlab.com/gitlab-org/gitlab/-/work_items/595553 | Broken Link |
| https://hackerone.com/reports/3640688 | Permissions Required |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5377 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5377
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5377 vulnerability anywhere in the article.
-
Daily CyberSecurity
GitLab Security Update: High-Severity Vulnerabilities Patched in April Release
GitLab has released a vital set of security updates for both Community Edition (CE) and Enterprise Edition (EE) to address a range of vulnerabilities, including high-severity flaws that could allow un ... Read more
The following table lists the changes that have been made to the
CVE-2026-5377 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:* *cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:* Added Reference Type GitLab Inc.: https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/ Types: Release Notes, Vendor Advisory Added Reference Type GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/work_items/595553 Types: Broken Link Added Reference Type GitLab Inc.: https://hackerone.com/reports/3640688 Types: Permissions Required -
New CVE Received by [email protected]
Apr. 22, 2026
Action Type Old Value New Value Added Description GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that could have allowed an authenticated user to access titles of confidential or private issues in public projects due to improper access control in the issue description rendering process. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-863 Added Reference https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/ Added Reference https://gitlab.com/gitlab-org/gitlab/-/work_items/595553 Added Reference https://hackerone.com/reports/3640688