CVE-2026-89078

⛔ critical

Summary

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.

CVSS Score

9.9

Critical

EPSS Score

0.4

Exploit Probability

Published Date

2026-09-24

First Seen: 2026-09-26

📊 Relative Risk Intelligence

This CVE is Extremely High Risk - more severe than 98.2% of all 365,890 vulnerabilities in our database.

#6,548

Top 5% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 24, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program

SSVC data provided by CISA

Last Modified 2026-09-28

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-415

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
gitlab	gitlab	Affected	> 19.2.0 < 19.2.7
gitlab	gitlab	Affected	> 19.3.0 < 19.3.3
gitlab	gitlab	Affected	v19.4.0

🔗 References 3

https://docs.gitlab.com/releases/patches/patch-relea...

Release Notes Vendor Advisory

https://gitlab.com/gitlab-org/gitlab/-/work_items/62...

Issue Tracking

https://hackerone.com/reports/4019059

Permissions Required

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-10518	🔶 medium	4.3	0.3	GitLab has remediated an issue in GitLab EE affecting all versions from 17.9 before 19.2.7, 19.3 before 19.3.3, and 19.4...	2026-09-29
CVE-2026-4523	ℹ️ low	3.7	0.4	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19.3.3, and ...	2026-09-29
CVE-2026-84739	⚠️ high	8.7	0.5	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.7, 19.3 before 19.3.3, and ...	2026-09-29
CVE-2026-8937	🔶 medium	4.3	0.3	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.2.7, 19.3 before 19.3.3, and 1...	2026-09-29
CVE-2026-92470	⚠️ high	7.7	0.2	GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 19.2.7, 19.3 before 19.3.3, and 19.4...	2026-09-24
CVE-2026-92529	🔶 medium	4.3	0.2	GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.2.7, 19.3 before 19.3.3, and 19.4...	2026-09-24

These CVEs affect the same products