CVE-2026-89078
Received Received - Intake

Double Free in GitLab CE/EE CI/CD Configuration

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-89078
EUVD
EUVD-2026-85736

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
gitlab gitlab_ce From 19.2 (inc) to 19.2.7 (exc)
gitlab gitlab_ce From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_ce From 19.4 (inc) to 19.4.1 (exc)
gitlab gitlab_ee From 19.2 (inc) to 19.2.7 (exc)
gitlab gitlab_ee From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_ee From 19.4 (inc) to 19.4.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-415 The product calls free() twice on the same memory address.

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Executive Summary

CVE-2026-89078 is a critical vulnerability in GitLab CE and EE where an authenticated user could execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.

Detection Guidance

Check GitLab version with: gitlab-rake gitlab:env:info. If version is below 19.2.7, 19.3.3, or 19.4.1, the system is vulnerable. Inspect CI/CD configuration files for suspicious regular expressions.

Impact Analysis

This vulnerability allows an authenticated attacker to run arbitrary code on the GitLab server, potentially leading to data breaches, unauthorized access, or system compromise. It affects all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1.

Compliance Impact

This vulnerability could lead to unauthorized code execution on GitLab servers, potentially compromising sensitive data. For GDPR, this may result in unauthorized access to personal data, violating confidentiality and integrity requirements. For HIPAA, it could expose protected health information to unauthorized parties, violating security and privacy rules.

Mitigation Strategies

Upgrade GitLab to version 19.4.1, 19.3.3, or 19.2.7 immediately. Review and remove any untrusted CI/CD configurations containing custom regular expressions.

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