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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Google Cloud Cloud Build unaffected
Version Status Constraints
0 affected < 1/26/2026

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://docs.cloud.google.com/build/docs/release-notes#March_03_2026 cve-icon cve-icon
History

Tue, 03 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 03 Mar 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Google Cloud Build Comment Control Bypass
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GoogleCloud

Published:

Updated: 2026-03-03T16:38:21.141Z

Reserved: 2026-02-24T17:29:16.705Z

Link: CVE-2026-3136

cve-icon Vulnrichment

Updated: 2026-03-03T16:38:14.528Z

cve-icon NVD

Status : Received

Published: 2026-03-03T17:16:19.160

Modified: 2026-03-03T17:16:19.160

Link: CVE-2026-3136

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses