Deserialization of Untrusted Data in GitLab (GitLab GitLab)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.57 % · percentile 47 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitLab
- NVD status
- Analyzed
Description
GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could allow an authenticated user with Duo Chat access to obtain Advanced Search instance configurations and sensitive credentials using a specially crafted GraphQL subscription argument to bypass serialization and perform server object lookup.
Weaknesses (CWE)
- CWE-502 — Deserialization of Untrusted Data
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | GitLab |
| CVSS 3.1 | CRITICAL 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD · cve@gitlab.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-76778
- GCVE · GCVE-0-2026-87719
CERT-FR advisories
- CERTFR-2026-AVI-1242 — Multiples vulnérabilités dans GitLab · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1160 — Multiples vulnérabilités dans GitLab · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*≥ 18.3.0 < 18.11.12cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*≥ 19.0.0 < 19.0.9cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*≥ 19.1.0 < 19.1.8cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*≥ 19.2.0 < 19.2.6cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*≥ 19.3.0 < 19.3.2
Affected products
| Product | Versions |
|---|---|
| GitLab · GitLab | affected 18.3 < 18.11.12 ; affected 19.0 < 19.0.9 ; affected 19.1 < 19.1.8 ; affected 19.2 < 19.2.6 ; affected 19.3 < 19.3.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |