Google Cloud Build Comment Control Bypass
Priority LOW 39CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0039 33rd percentileScored 2026-11-07
Fix Fixed Cloud Build (Google Cloud): 1/26/2026
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Cloud Build (Google Cloud) Fixed in 1/26/2026
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3136
- 2026-10-03 Alias added: GHSA-p8rp-xfq6-8f8m
References
Sources
- CVE-2026-3136 · CVE Program
- CVE-2026-3136 · NVD
- FIRST EPSS
- GHSA-p8rp-xfq6-8f8m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences