CVE-2026-87719
Published:September 12, 2026
Updated:September 22, 2026
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.
Affected Packages
https://github.com/gitlabhq/gitlabhq.git (GITHUB):
Affected version(s) >=v18.3.0 <v19.1.8Fix Suggestion:
Update to version v19.1.8https://github.com/gitlabhq/gitlabhq.git (GITHUB):
Affected version(s) >=v19.3.0 <v19.3.2Fix Suggestion:
Update to version v19.3.2https://github.com/gitlabhq/gitlabhq.git (GITHUB):
Affected version(s) >=v19.2.0 <v19.2.6Fix Suggestion:
Update to version v19.2.6https://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v19.2.0-ee <v19.2.6-eeFix Suggestion:
Update to version v19.2.6-eehttps://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v19.3.0-ee <v19.3.2-eeFix Suggestion:
Update to version v19.3.2-eehttps://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v18.3.0-ee <v19.1.8-eeFix Suggestion:
Update to version v19.1.8-eeRelated Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
0.61