CVE-2023-5356

Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

7.3 HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N

EPSS

0.83% chance of exploitation in the next 30 days, 55th percentile

Published

2024-01-12

Updated

2026-04-28

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2188868

References

• CVE Record
• NVD entry

Related

• CVE-2023-5355
• CVE-2023-5359
• CVE-2023-5354
• CVE-2023-5360
• CVE-2023-5353
• CVE-2023-5373