{"id":"CVE-2026-115522","aliases":[],"title":"Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python","titleSource":"Google","descriptionSource":"Google","products":[{"vendor":"Google","name":"Agent Development Kit (ADK) for Python","platforms":[],"versions":[{"version":"1.19.0","status":"affected","lessThan":"1.39.1","versionType":"semver"},{"version":"2.0.0a1","status":"affected","lessThan":"2.7.0","versionType":"semver"}],"defaultStatus":"unaffected","source":"Google","url":"https://www.cve.org/CVERecord?id=CVE-2026-115522"}],"remediation":[{"text":"Upgrade Google Agent Development Kit (ADK) for Python (google-adk) to version 1.39.1 (for 1.x installations) or version 2.7.0 (for 2.x installations) or later.","source":"Google","url":"https://www.cve.org/CVERecord?id=CVE-2026-115522"}],"description":"Exposure of Resource to Wrong Sphere (CWE-668) in FileArtifactService in Google Agent Development Kit (ADK) for Python (google-adk) versions 1.19.0 before 1.39.1 and 2.0.0a1 before 2.7.0 allows a caller in one application to list, read, overwrite, or delete artifacts belonging to another application when both applications share a FileArtifactService root directory and use the same user_id (and session_id for session-scoped artifacts). FileArtifactService accepted app_name across its public API methods but omitted app_name when constructing on-disk paths (root/users/{user_id}/... instead of root/apps/{app_name}/users/{user_id}/...). Version 2.6.0 scoped writes by app_name but retained a legacy root/users/{user_id} fallback for reads and deletes; version 2.7.0 and the 1.x backport in version 1.39.1 removed the fallback and enforce full per-app path scoping.","severity":"medium","score":5.3,"published":"2026-10-28T04:36:49.927Z","modified":"2026-10-28T04:36:49.927Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/google/adk-python/issues/5618","https://github.com/google/adk-python/pull/5619","https://github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49cbe9e","https://github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7340c","https://github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c6bd4","https://github.com/google/adk-python/releases/tag/v1.39.1","https://github.com/google/adk-python/releases/tag/v2.7.0"],"sources":[{"name":"CVE","id":"CVE-2026-115522","modified":"2026-10-28T04:36:49.927Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-115522"}],"assessments":[{"source":"Google","vector":"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","score":5.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:45:31.448Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}