Description
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.
Published: 2026-09-12
Score: 9.9 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to versions 19.1.8, 19.2.6, 19.3.2 or above.

Tracking

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Advisories

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History

Sat, 12 Sep 2026 03:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Deserialization of Untrusted Data in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-502
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

Gitlab Gitlab
cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-09-12T02:46:26.755Z

Reserved: 2026-09-09T00:34:03.671Z

Link: CVE-2026-87719

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-12T03:16:31.477

Modified: 2026-09-12T03:16:31.477

Link: CVE-2026-87719

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses