CVE-2026-3136— Google Cloud Build Comment Control Bypass
Quick assessment
Affected
Google Cloud Cloud Build
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Google Cloud Build是美国谷歌（Google）公司的一个完全托管的CI/CD平台。 Google Cloud Build 2026-1-26之前版本存在安全漏洞，该漏洞源于GitHub Trigger Comment Control存在授权不当，可能导致远程攻击者在构建环境中执行任意代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3136
Vulnerability Information
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Vulnerability Title
Google Cloud Build Comment Control Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Google Cloud Build 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Cloud Build是美国谷歌（Google）公司的一个完全托管的CI/CD平台。 Google Cloud Build 2026-1-26之前版本存在安全漏洞，该漏洞源于GitHub Trigger Comment Control存在授权不当，可能导致远程攻击者在构建环境中执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Google Cloud | Cloud Build | 0 ~ 1/26/2026 | - |
|
II. Public POCs for CVE-2026-3136
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-3136 (1)
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V. Comments for CVE-2026-3136
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