Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab
Priority MEDIUM 64CWE-80Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-80.
Summary
An issue has been discovered in GitLab CE/EE affecting all versions after 13.7 before 16.6.6, 16.7 prior to 16.7.4, and 16.8 prior to 16.8.1. Improper input sanitization of user name allows arbitrary API PUT requests.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00677 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 16.6.6, 16.7.4, 16.8.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
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 | 13.7 to before 16.6.6; 16.7 to before 16.7.4; 16.8 to before 16.8.1 | 16.6.6, 16.7.4, 16.8.1 | Patch available | CNA |
- GitLab VendorGitLab Affected 13.7 to before 16.6.6; 16.7 to before 16.7.4; 16.8 to before 16.8.1 Fixed in 16.6.6, 16.7.4, 16.8.1 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | 13.7.0 to before 16.6.6 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | 13.7.0 to before 16.6.6 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | 16.7.0 to before 16.7.4 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | 16.7.0 to before 16.7.4 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.8.0:*:*:*:community:*:*:* | 16.8.0 | Vulnerable | GitLab |
| cpe:2.3:a:gitlab:gitlab:16.8.0:*:*:*:enterprise:*:*:* | 16.8.0 | Vulnerable | GitLab |
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 13.7.0 to before 16.6.6 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 13.7.0 to before 16.6.6 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 16.7.0 to before 16.7.4 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 16.7.0 to before 16.7.4 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.8.0:*:*:*:community:*:*:* Versions 16.8.0 Vulnerable ·GitLab
- cpe:2.3:a:gitlab:gitlab:16.8.0:*:*:*:enterprise:*:*:* Versions 16.8.0 Vulnerable ·GitLab
Remediation
- Fix · CNA GitLab (GitLab) Fixed in 16.6.6, 16.7.4, 16.8.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
GitLab 16.6.6, 16.7.4, 16.8.1
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2023-05165 Missing Authorization in GitLabPriority LOW 38
- TI-2023-05664 Inefficient Regular Expression Complexity in GitLabPriority LOW 31
- TI-2024-00417 Direct Request ('Forced Browsing') in GitLabPriority LOW 21
Timeline
- 2026-10-02 Threatist record created from CVE-2023-5933
- 2026-10-03 Alias added: GHSA-84m5-rqxq-483p
References
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-2023-5933 · CVE Program
- CVE-2023-5933 · NVD
- FIRST EPSS
- GHSA-84m5-rqxq-483p · 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