HighVulnerability

CVE-2026-19889: GitLab AI Gateway model request redirection exposes cloud credentials

Source: NVD(opens in a new tab)
Identifier: CVE-2026-19889
Published: August 27, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

GitLab has remediated a vulnerability in the GitLab AI Gateway component, affecting all versions from 18.9.0 to 19.0.12, 19.1 to 19.1.7, and 19.2 to 19.2.2. An authenticated user with Duo Agent Platform access could redirect model requests to an externally-controlled endpoint via crafted model metadata, which could have disclosed Google Vertex AI or AWS Bedrock cloud service credentials.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 8.2(high)
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector: network
Attack complexity: high
Privileges required: low
User interaction: none
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.
Disclosure date: August 27, 2026

Weaknesses and techniques

Weakness (CWE): CWE-918
Attack pattern (CAPEC): CAPEC-664

Affected

Vendors: Google,
Amazon

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: API
Impact: Confidentiality
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-19889

First tracked: August 27, 2026 at 02:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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