gcdRadar
archive/Patch now/AIR-2026-1308
closedclosed 27 Aug 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-19889: Model request redirection vulnerability in GitLab AI Gateway

GitLab AI Gateway, Vertex AI, Bedrock

GitLab remediated an AI Gateway vulnerability that allowed authenticated users to redirect model requests to external endpoints via crafted metadata. This flaw resulted in the exposure of cloud service credentials.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
8.2
EPSS
<0.01 · top 71% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
27 Aug 2026
last update
27 Aug 2026
CVE ids
CVE-2026-19889other records

Timeline · 1

  1. 27 Aug 2026CVE-2026-19889: GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.9.0 to…

Sources · 1

Advisories and databases

  1. 2026-08-27
    CVE-2026-19889: GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.9.0 to…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-19889

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerabilityData leak
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Google, Amazon, Framework / tooling
owasp llm top 10
LLM02:2025 Sensitive Information DisclosureLLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
data-leak
dates
happened 27 Aug 2026 · first reported 27 Aug 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-19889: Model request redirection vulnerability in GitLab AI Gateway

https://gcdradar.vercel.app/incidents/cve-2026-19889-model-request-redirection-vulnerability-in-gi · AIR-2026-1308 · closed 2026-08-27

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-27
- AI role: Attack on AI
- Products: GitLab AI Gateway, Vertex AI, Bedrock
- CVE ids: CVE-2026-19889
- CVSS: 8.2

## Summary

GitLab remediated an AI Gateway vulnerability that allowed authenticated users to redirect model requests to external endpoints via crafted metadata. This flaw resulted in the exposure of cloud service credentials.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-08-27: CVE-2026-19889: GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.9.0 to… (https://nvd.nist.gov/vuln/detail/CVE-2026-19889)

## Sources

- 2026-08-27 NVD: CVE-2026-19889: GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.9.0 to… https://nvd.nist.gov/vuln/detail/CVE-2026-19889

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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