CVE-2026-3136

CRITICAL
2026-03-03 f45cbf4e-4146-4068-b7e1-655ffc2c548c
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:05 vuln.today
CVE Published
Mar 03, 2026 - 17:16 nvd
CRITICAL 9.8

Tags

Google Github Cloud Build

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.

Analysis

Improper authorization in Google Cloud Build GitHub Trigger allowing unauthenticated build execution. EPSS 0.19%.

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Remediation

Within 24 hours: Inventory all Cloud Build instances with GitHub trigger integrations and review recent build logs for suspicious activity. Within 7 days: Implement network segmentation to restrict build environment access, disable GitHub trigger comment control if not operationally critical, and enforce additional authentication for build initiation. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +49
POC: 0

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CVE-2026-3136 vulnerability details – vuln.today
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