UpHeron
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Servers and applications

CVE-2026-12635

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with maintainer-role permissions to make requests to internal network resources through mirror synchronization due to improper URL validation.

Severity
Low 3.1
Published
25 Jun 2026
Last changed
26 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.11.6, 19.0.3
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 8.3.0 before 18.11.6
  • From 19.0.0 before 19.0.3
  • Version 19.1.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-12635
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-12635