BaseFortify

Publication date: 2025-11-15

Last updated on: 2025-11-20

Assigner: GitLab Inc.

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to leak sensitive information from confidential issues by injecting hidden prompts into merge request comments.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-15

Last Modified

2025-11-20

Generated

2026-07-06

AI Q&A

2025-11-15

EPSS Evaluated

2026-07-05

NVD

CVE-2025-6945

Affected Vendors & Products

Vendor	Product	Version / Range
gitlab	gitlab	From 17.9.0 (inc) to 18.3.6 (exc)
gitlab	gitlab	From 18.4.0 (inc) to 18.4.4 (exc)
gitlab	gitlab	From 18.5.0 (inc) to 18.5.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-77	The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability in GitLab EE allows an authenticated attacker to leak sensitive information from confidential issues by injecting hidden prompts into merge request comments. It affects certain versions before specific patches were released.

Impact Analysis

The vulnerability could lead to leakage of sensitive information from confidential issues, potentially exposing private data to unauthorized users who have authenticated access.

Mitigation Strategies

To mitigate this vulnerability, update GitLab EE to a fixed version: 18.3.6 or later if using 17.8 series, 18.4.4 or later if using 18.4 series, or 18.5.2 or later if using 18.5 series. This will prevent authenticated attackers from leaking sensitive information via hidden prompts in merge request comments.

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