Medium severity · published Oct 13, 2026
CVE-2026-105458
Reliance on Untrusted Inputs in a Security Decision in GitLab
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user holding a specific granular permission to obtain a GitLab Duo Agent Platform token that bypasses governance controls, due to reliance on untrusted input in a security decision.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
19.1 before 19.2.8; 19.3 before 19.3.5; 19.4 before 19.4.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105458
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105458
gitlab.com
https://gitlab.com/gitlab-org/gitlab/-/work_items/627711
docs.gitlab.com
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
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