CVE-2026-107858: Google Agent Development Kit (ADK) for Java

Cross-Site WebSocket Hijacking and Permissive CORS in Google Agent Development Kit (ADK) for Java Development Server

CVSS 7.2 HighEPSS 0.0036 · 29th percentile

Published by the CVE Program (CNA: Google) at 23 Oct 2026, 05:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Google	Agent Development Kit (ADK) for Java Package name: com.google.adk:google-adk-dev	affected 0.1.0 to before 1.13.0 semver Other versions: unaffected
Google	Agent Development Kit (ADK) for Java Package name: com.google.adk:google-adk-maven-plugin	affected 0.3.0 to before 1.13.0 semver Other versions: unaffected

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.2	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N	CNA (Google)

CISA KEV Not listed.
EPSS 0.0036, the 29th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

23 Oct 2026, 05:08 UTC Confirmed by the CVE List
23 Oct 2026, 06:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/google/adk-java/releases/tag/v1.13.0 release-notes
github.com/google/adk-java/commit/5667d382ab5078a0d6e8f7184713a6bab767e004 patch
github.com/google/adk-java/commit/1ae5078072e13e101318e32833f1db323ef084e1 patch
github.com/google/adk-java/pull/1222 mitigationpatch
github.com/google/adk-java/commit/c2b087cbaf44f44d20dc946d8f2391506a2fce3d mitigationpatch
github.com/google/adk-java/releases/tag/v1.6.0 release-notes
github.com/google/adk-java/issues/1257 issue-trackingexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.