CVE-2026-3035 PUBLISHED

Authentication Bypass Using an Alternate Path or Channel in GitLab

Assigner: GitLab
Reserved: 23.02.2026 Published: 26.08.2026 Updated: 26.08.2026

GitLab has remediated an issue in GitLab EE affecting all versions from 11.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with project Maintainer permissions could have accessed the terminal of a protected environment they were not authorized to use due to improper authorization checks.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CVSS Score: 5.5

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	High	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 11.3 to 19.1.7 (excl.) affected from 19.2 to 19.2.5 (excl.) affected from 19.3 to 19.3.1 (excl.)

Solutions

Upgrade to versions 19.1.7, 19.2.5, 19.3.1 or above.

Credits

Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program finder

References

Problem Types

CWE-288: Authentication Bypass Using an Alternate Path or Channel CWE