CVE-2026-115522: Google Agent Development Kit (ADK) for Python

Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python

CVSS 5.3 MediumEPSS 0.0038 · 31st percentile

Published by the CVE Program (CNA: Google) at 28 Oct 2026, 04:36 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 Python Package name: google-adk	affected 1.19.0 to before 1.39.1 semver affected 2.0.0a1 to before 2.7.0 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
5.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	CNA (Google)

CISA KEV Not listed.
EPSS 0.0038, the 31st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

28 Oct 2026, 04:36 UTC Confirmed by the CVE List
28 Oct 2026, 05:16 UTC Confirmed by NVD

Sources

References from the CNA

github.com/google/adk-python/pull/5619 patch
github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49cbe9e patch
github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7340c patch
github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c6bd4 patch
github.com/google/adk-python/releases/tag/v1.39.1 release-notes
github.com/google/adk-python/releases/tag/v2.7.0 release-notes
github.com/google/adk-python/issues/5618 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.