CVE-2026-1230

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 1.0 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause repository downloads to contain different code than displayed in the web interface due to incorrect validation of branch references under certain circumstances.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1

4.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

EPSS

0.19% chance of exploitation in the next 30 days, 9th percentile

Published

2026-03-11

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3505165

References

• CVE Record
• NVD entry

Related

• CVE-2026-12295
• CVE-2026-1232
• CVE-2026-12281
• CVE-2026-1235
• CVE-2026-12277
• CVE-2026-12352