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Servers and applications

CVE-2026-105777

Insertion of Sensitive Information Into Sent Data in GitLab

Severity
Medium 6.5
Published
21 Oct 2026
Last changed
30 Oct 2026
Added to UpHeron
23 Oct 2026
Fixed in
19.3.6, 19.4.3, 19.5.1
Sources
NVD, CVE Program

Description

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.

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 17.6.5 before 19.3.6
  • From 19.4.0 before 19.4.3
  • Version 19.5.0
  • From 19.5 before 19.5.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-105777
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-105777