eMudhra/emSign CA compromise (October 2026): what Cloud SDK Java Libraries developers need to do
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This is a locked security advisory announcement, not a code task, and the payload names no repository file, test or entry point. Read the linked advisory GHSA-m4gc-hcgx-wmc7 and Google Cloud bulletin GCP-2026-075 to understand the affected google-api-client versions. The issue is locked and asks for questions to go in new issues, so a newcomer should not start work here.
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描述
Summary
Eight eMudhra (emSign) intermediate CA certificates have recoverable private keys (Mozilla bug 2083449). Clients whose trust store still contains emSign ECC Root CA - G3, emSign Root TLS CA - G3 or AAA Certificate Services can be impersonated by an on-path attacker.
The following packages and trust stores are affected
com.google.api-client:google-api-clientearlier than 2.9.2, when the HTTP transport is created withGoogleNetHttpTransport.newTrustedTransport(). Versions earlier than 2.9.0 always use a bundled trust store that includesAAA Certificate Services; versions 2.9.0 and 2.9.1 use it when the JDK trust store cannot be loaded.- Google API service library packages (
com.google.apis:google-api-services-*) with a version suffix earlier than-2.9.2, which depend on an affectedgoogle-api-client. - The JDK trust store (
cacerts), used by all other Google client transports, and the Windows certificate store on Windows.
You can take the following actions to resolve these issues
- Upgrade
google-api-clientto 2.9.2 or later, orcom.google.cloud:libraries-bomto 26.91.0 or later. - If your build declares a service library without
google-api-client, upgrade the service library to a release whose version ends in-2.9.2or later (for examplegoogle-api-services-bigquery:v2-rev20260922-2.9.2), or declarecom.google.api-client:google-api-client:2.9.2directly. - If you use Spring Framework on Google Cloud, upgrade to the current patch release of your line:
8.3.1,7.5.2,6.5.12,3.9.19or later; these importlibraries-bom26.91.0. - Apply your JDK vendor's security update.
- On Windows, apply the Windows root certificate update.
Advisory: GHSA-m4gc-hcgx-wmc7 (google-api-client).
Google Cloud Security Bulletin: GCP-2026-075.
This issue is locked. Please open a new issue for questions.
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