CVE-2026-3136
Received Received - Intake
Improper Authorization in Google Cloud Build Enables Remote Code Execution

Publication date: 2026-03-03

Last updated on: 2026-03-05

Assigner: GoogleCloud

Description
An improper authorization vulnerability in GitHub Trigger Comment Control in Google Cloud Build prior to 2026-1-26 allows a remote attacker to execute arbitrary code in the build environment. This vulnerability was patched on 26 January 2026, and no customer action is needed.
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Meta Information
Published
2026-03-03
Last Modified
2026-03-05
Generated
2026-06-16
AI Q&A
2026-03-03
EPSS Evaluated
2026-06-14
NVD
CVE-2026-3136
EUVD
EUVD-2026-9302
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google cloud_build to 2026-1-26 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Attack-Flow Graph
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Executive Summary

CVE-2026-3136 is an improper authorization vulnerability in the GitHub Trigger Comment Control feature of Google Cloud Build prior to January 26, 2026.

This vulnerability allows a remote attacker to execute arbitrary code within the build environment.

The issue was patched on January 26, 2026, and no customer action is needed.

Impact Analysis

This vulnerability can allow a remote attacker to execute arbitrary code in your build environment, potentially leading to unauthorized actions, data compromise, or disruption of your build processes.

Because the attacker can run arbitrary code, they might gain control over the build environment, which could be used to inject malicious code, access sensitive information, or affect the integrity of your software builds.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability CVE-2026-3136 in Google Cloud Build was patched as of January 26, 2026.

No customer action is needed since the fix has already been applied in the service.

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