Vulnerability · Published Nov 6, 2023 · Assigned by GitLab
CVE-2023-3399Insertion of Sensitive Information Into Sent Data in GitLab
High 8.5
In plain English
A high-severity security flaw in GitLab from GitLab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 3.1)8.5High
Exploit odds (30 days)0.5%top 54.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | gitlab-agent | no fix listed | UBUNTU-CVE-2023-3399 |
| Ubuntu:25.10 | gitlab-agent | no fix listed | UBUNTU-CVE-2023-3399 |
| Ubuntu:26.04:LTS | gitlab-agent | no fix listed | UBUNTU-CVE-2023-3399 |
| Ubuntu:26.10 | gitlab-agent | no fix listed | UBUNTU-CVE-2023-3399 |
Affected products (as reported)
Weakness: CWE-201 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
References
- GitLab Issue #416244 issue-tracking
- HackerOne Bug Bounty Report #2021616 technical-description, exploit, permissions-required