Incorrect Authorization in GitLab
Priority MEDIUM 40CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00829 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 16.5.6, 16.6.4, 16.7.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| GitLab | GitLab | 8.13 to before 16.5.6; 16.6 to before 16.6.4; 16.7 to before 16.7.2 | 16.5.6, 16.6.4, 16.7.2 | Patch available | CNA |
- GitLab VendorGitLab Affected 8.13 to before 16.5.6; 16.6 to before 16.6.4; 16.7 to before 16.7.2 Fixed in 16.5.6, 16.6.4, 16.7.2 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | 8.13.0 to before 16.5.6 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | 8.13.0 to before 16.5.6 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | 16.6.0 to before 16.6.4 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | 16.6.0 to before 16.6.4 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.7.0:*:*:*:community:*:*:* | 16.7.0 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.7.0:*:*:*:enterprise:*:*:* | 16.7.0 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.7.1:*:*:*:community:*:*:* | 16.7.1 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.7.1:*:*:*:enterprise:*:*:* | 16.7.1 | Vulnerable | GitLab |
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 8.13.0 to before 16.5.6 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 8.13.0 to before 16.5.6 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 16.6.0 to before 16.6.4 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 16.6.0 to before 16.6.4 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.7.0:*:*:*:community:*:*:* Versions 16.7.0 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.7.0:*:*:*:enterprise:*:*:* Versions 16.7.0 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.7.1:*:*:*:community:*:*:* Versions 16.7.1 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.7.1:*:*:*:enterprise:*:*:* Versions 16.7.1 Vulnerable ·GitLab
Remediation
- Fix · CNA GitLab (GitLab) Fixed in 16.5.6, 16.6.4, 16.7.2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
GitLab 16.5.6, 16.6.4, 16.7.2
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2023-04429 Incorrect Authorization in GitLabPriority LOW 34
- TI-2023-06357 Missing Authorization in GitLabPriority LOW 30
- TI-2023-01907 Improper Verification of Cryptographic Signature in GitLabPriority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2023-5356
- 2026-10-03 Alias added: GHSA-x7v8-7cpc-hv73
References
Exploit 1
Other 1
More Gitlab vulnerabilities
- TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
- TI-2026-58817 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2023-06425 Weak Password Recovery Mechanism for Forgotten Password in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2021-05191 Code injection in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2021-05161 Server-side request forgery in GitLab KEVCVSS 3.1CRITICAL 9.8
- TI-2022-02763 Injection in GitLab CVSS 3.1CRITICAL 9.9
Sources
- CVE-2023-5356 · CVE Program
- CVE-2023-5356 · NVD
- FIRST EPSS
- GHSA-x7v8-7cpc-hv73 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences