CVE-2026-75871
⚠️ highSummary
GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.10 to 19.0.12, 19.1 to 19.1.7, and 19.2 to 19.2.2 that could have allowed an authenticated user with Duo Agent Platform access to redirect outbound model requests to an externally-controlled endpoint via a crafted inline flow configuration that overrides the HTTP Host header, resulting in disclosure of Google Cloud Vertex cloud service credentials and private signing keys.
CVSS Score
8.2
High
EPSS Score
0.2
Exploit Probability
Published Date
2026-08-27
First Seen: 2026-08-28
📊 Relative Risk Intelligence
This CVE is High Risk - more severe than 79.1% of all 360,548 vulnerabilities in our database.
#75,297
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 27, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Thanks [kyyblin](https://hackerone.com/kyyblin) for reporting this vulnerability through our HackerOne bug bounty program
SSVC data provided by
CISA
Last Modified
2026-09-01
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
CWE IDs (Weakness Types)