{"id":"CVE-2026-115522","state":"PUBLISHED","title":"Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python","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.","publishedAt":"2026-10-28T04:36:49.927Z","updatedAt":"2026-10-28T04:36:49.927Z","severity":{"score":5.3,"label":"Medium","version":"4.0","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","source":"Google"},"assigner":"Google","products":["Google Agent Development Kit (ADK) for Python"],"affected":[{"vendor":"Google","product":"Agent Development Kit (ADK) for Python","packageName":"google-adk","defaultStatus":"unaffected","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"}],"repo":"https://github.com/google/adk-python"}],"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"],"weaknesses":["CWE-668"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115522.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115522","state":"PUBLISHED","datePublished":"2026-10-28T04:36:49.927Z","dateUpdated":"2026-10-28T04:36:49.927Z","assignerShortName":"Google","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","dateReserved":"2026-10-22T18:18:29.284Z"},"containers":{"cna":{"title":"Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Google","product":"Agent Development Kit (ADK) for Python","packageName":"google-adk","defaultStatus":"unaffected","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"}],"repo":"https://github.com/google/adk-python"}],"references":[{"url":"https://github.com/google/adk-python/issues/5618","tags":["issue-tracking","exploit"]},{"url":"https://github.com/google/adk-python/pull/5619","tags":["patch"]},{"url":"https://github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49cbe9e","tags":["patch"]},{"url":"https://github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7340c","tags":["patch"]},{"url":"https://github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c6bd4","tags":["patch"]},{"url":"https://github.com/google/adk-python/releases/tag/v1.39.1","tags":["release-notes"]},{"url":"https://github.com/google/adk-python/releases/tag/v2.7.0","tags":["release-notes"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-668","lang":"en","description":"CWE-668 Exposure of Resource to Wrong Sphere","type":"CWE"}]}],"providerMetadata":{"shortName":"Google","orgId":"14ed7db2-1595-443d-9d34-6215bf890778","dateUpdated":"2026-10-28T04:36:49.927Z"},"datePublic":"2026-07-29T00:00:00.000Z","impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"solutions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Upgrade Google Agent Development Kit (ADK) for Python (<code>google-adk</code>) to version 1.39.1 (for 1.x installations) or version 2.7.0 (for 2.x installations) or later.</p>"}]}],"credits":[{"lang":"en","value":"@Nant361","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}}}}}