AIKIDO-2026-549130
gitlab-ce is vulnerable to Deserialization of Untrusted Data
99
Critical Risk
This Affects:
gitlab-ceTL;DR
The GraphQL subscription serializer accepts crafted subscription arguments that bypass intended serialization and perform server object lookup. An authenticated user with Duo Chat access can obtain Advanced Search instance configurations and sensitive credentials this way. The fix hardens subscription argument handling so deserialization cannot be abused for object lookup.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and Duo Chat is available to users.
Background info
gitlab-ce is vulnerable to Deserialization of Untrusted Data in versions 18.3.0 - 19.1.7, 19.2.0 - 19.2.5 and 19.3.0 - 19.3.1.
How to fix this
Upgrade the gitlab-ce library to the patch version.
Links
docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/gitlab.com/gitlab-org/gitlab/-/work_items/628160hackerone.com/reports/4012289
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
FedRAMPImplementing© All Intel data is openly available and commercially licensed.