CVE-2026-19889Public exploitNetwork attack vectorHinoki check available

Cloud credential disclosure via crafted model metadata

Published Aug 27, 2026 · Updated Aug 27, 2026

SSRF in GitLab AI Gateway allows remote authenticated users with Duo Agent Platform access to disclose cloud service credentials. The gateway accepts attacker-crafted model metadata as the destination for outbound model requests, sending Google Vertex AI or AWS Bedrock credentials to an externally controlled endpoint. Exploitation requires authenticated Duo Agent Platform access; the published impact is disclosure of those cloud credentials, with no service interruption reported.

CVSS severity8.2
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SSRF in GitLab AI Gateway allows remote authenticated users with Duo Agent Platform access to disclose cloud service credentials. The gateway accepts attacker-crafted model metadata as the destination for outbound model requests, sending Google Vertex AI or AWS Bedrock credentials to an externally controlled endpoint. Exploitation requires authenticated Duo Agent Platform access; the published impact is disclosure of those cloud credentials, with no service interruption reported.

The record

CVE
CVE-2026-19889
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
GitLab
Product
GitLab AI Gateway
Classifications
CWE-918, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=18.9 <19.0.12
  2. Affected versionversion=19.1 <19.1.7
  3. Affected versionversion=19.2 <19.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLab AI Gatewayversion=18.9 <19.0.12; version=19.1 <19.1.7; version=19.2 <19.2.2

Published CVSS scores

8.2GitLabCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552Unsecured Credentials

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo