CVE-2026-3136

Severity CVSS v4.0:

HIGH

Type:

Unavailable / Other

Publication date:

03/03/2026

Last modified:

03/03/2026

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.<br /> <br /> This vulnerability was patched on 26 January 2026, and no customer action is needed.

Impact

Vector 4.0

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 CVSS v4.0 Severity and Metrics:

Base Score: 8.60 HIGH
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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): Active
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): Low
Provider Urgency (U): Clear

Base Score 4.0

8.60

Severity 4.0

HIGH

References to Advisories, Solutions, and Tools

https://docs.cloud.google.com/build/docs/release-notes#March_03_2026