CVE-2026-89078: Double Free in GitLab
Critical · CVSS 9.9 (CVSS 3.1)EPSS 0.49%, 42th percentilePublished Updated Assigner: GitLab
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.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L · CWE-415
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
- Cloudinary Notice regarding recently-reported Ruby regular expression vulnerabilities (CVE-2026-89078, CVE-2026-93577, CVE-2026-97229, CVE-2026-110264)· No impact listed · says not affected (notice says “no impact on ”)
“Notice regarding recently-reported Ruby regular expression vulnerabilities (CVE-2026-89078, CVE-2026-93577, CVE-2026-97229, CVE-2026-110264) On October 23, 2026, the Ruby project released security fixes for…”
Affected vendors and products
GitLab: GitLab
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ (opens in new tab)
- gitlab.com/gitlab-org/gitlab/-/work_items/628577 (opens in new tab)
- hackerone.com/reports/4019059 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)