🔐 CVE Alert

CVE-2026-105777

MEDIUM 4.3

Insertion of Sensitive Information Into Sent Data in GitLab

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6.5 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have retrieved sensitive internal server credentials due to improper filtering of internal response headers.

CWE CWE-201
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Oct 21, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Affected Versions

GitLab / GitLab
17.6.5 < 19.3.6 19.4 < 19.4.3 19.5 < 19.5.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/597022 hackerone.com: https://hackerone.com/reports/3657282 docs.gitlab.com: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/

Credits

Thanks [altair00](https://hackerone.com/altair00) for reporting this vulnerability through our HackerOne bug bounty program