CVE-2026-90970Network attack vectorHinoki check available

Authenticated command execution via prompt-template sandbox escape

Published Oct 2, 2026 · Updated Oct 2, 2026

Template injection in GitLab AI Gateway allows remote authenticated users to execute commands via crafted Duo Agent Platform flows. A specially crafted flow configuration escapes the prompt template sandbox; GitLab has not published the exact parsing or bypass step. Exploitation requires authenticated Duo Agent Platform access, and command execution occurs on the AI Gateway.

CVSS severity9.9
Critical
EPSS probability0.94%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Template injection in GitLab AI Gateway allows remote authenticated users to execute commands via crafted Duo Agent Platform flows. A specially crafted flow configuration escapes the prompt template sandbox; GitLab has not published the exact parsing or bypass step. Exploitation requires authenticated Duo Agent Platform access, and command execution occurs on the AI Gateway.

The record

CVE
CVE-2026-90970
Published
Oct 2, 2026
Updated
Oct 2, 2026
Vendor
GitLab
Product
GitLab AI Gateway
Classifications
CWE-1336, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=18.1.6 <19.2.4
  2. Affected versionversion=19.3 <19.3.2
  3. Affected versionversion=19.4 <19.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLab AI Gatewayversion=18.1.6 <19.2.4; version=19.3 <19.3.2; version=19.4 <19.4.1

Published CVSS scores

9.9GitLabCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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