CVE-2026-2031Network attack vector

Data disclosure and code execution via exposed APIs

Published May 15, 2026 · Updated May 15, 2026

Improper access control in Google Cloud Application Integration before 2026-01-23 allows remote attackers to disclose data and execute code. Several internal Integration Platform API endpoints accepted specially crafted HTTP requests without enforcing authorization because they were inadvertently exposed. Unauthenticated network access was sufficient, exposing sensitive internal information and granting arbitrary code execution in the hosted service.

CVSS severity10.0
Critical
EPSS probability0.53%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Google Cloud Application Integration before 2026-01-23 allows remote attackers to disclose data and execute code. Several internal Integration Platform API endpoints accepted specially crafted HTTP requests without enforcing authorization because they were inadvertently exposed. Unauthenticated network access was sufficient, exposing sensitive internal information and granting arbitrary code execution in the hosted service.

The record

CVE
CVE-2026-2031
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Go standard library
Product
Application Integration
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026-01-23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Application Integrationversion=0 <2026-01-23

Published CVSS scores

10.0Google CloudCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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