CVE-2026-18252
⚠️ highSummary
GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 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 developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.
CVSS Score
7.3
High
EPSS Score
0.3
Exploit Probability
Published Date
2026-08-26
First Seen: 2026-08-28
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 54.3% of all 360,548 vulnerabilities in our database.
#164,842
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 26, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Thanks [thwin_htet](https://hackerone.com/thwin_htet) for reporting this vulnerability through our HackerOne bug bounty program
SSVC data provided by
CISA
Last Modified
2026-08-31
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)