CVE-2026-87719
GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.9
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS probability
- 0.61%
- CWE
- CWE-502
- Published
- 2026-09-12
- Last modified
- 2026-09-15
Affected products
- GitLab GitLab
- GitLab GitLab
- GitLab GitLab
Weakness type
Related vulnerabilities
- CVE-2026-72649 — Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution
- CVE-2026-82222 — WordPress GiveWP plugin <= 4.16.7.1 - Remote Code Execution (RCE) vulnerability
- CVE-2026-70416 — Dell ObjectScale, versions prior to 4.4.0.0, contains a Deserialization of Untrusted Data vulnerability. An unauthentica
- CVE-2026-17061 — Deserialization of Untrusted Data Vulnerability in SIMULIA Execution Engine from Release 2023 through Release 2026
- CVE-2026-4703 — WS Form LITE <= 1.10.80 - Unauthenticated PHP Object Injection via Form Submission
- CVE-2026-20307 — Cisco Identity Services Engine Remote Code Execution Vulnerability
- CVE-2026-12650 — A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated
- CVE-2026-78006 — The Events Calendar <= 6.17.4 - Unauthenticated PHP Object Injection to Remote Code Execution