{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115522", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2026-10-22T18:18:29.284Z", "datePublished": "2026-10-28T04:36:49.927Z", "dateUpdated": "2026-10-28T04:36:49.927Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-10-28T04:36:49.927Z"}, "title": "Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python", "datePublic": "2026-07-29T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-668", "description": "CWE-668 Exposure of Resource to Wrong Sphere", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "affected": [{"vendor": "Google", "product": "Agent Development Kit (ADK) for Python", "packageName": "google-adk", "repo": "https://github.com/google/adk-python", "versions": [{"status": "affected", "version": "1.19.0", "lessThan": "1.39.1", "versionType": "semver"}, {"status": "affected", "version": "2.0.0a1", "lessThan": "2.7.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Exposure of Resource to Wrong Sphere (CWE-668) in <code>FileArtifactService</code> in Google Agent Development Kit (ADK) for Python (<code>google-adk</code>) 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 <code>FileArtifactService</code> root directory and use the same <code>user_id</code> (and <code>session_id</code> for session-scoped artifacts). <code>FileArtifactService</code> accepted <code>app_name</code> across its public API methods but omitted <code>app_name</code> when constructing on-disk paths (<code>root/users/{user_id}/...</code> instead of <code>root/apps/{app_name}/users/{user_id}/...</code>). Version 2.6.0 scoped writes by <code>app_name</code> but retained a legacy <code>root/users/{user_id}</code> 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.</p>"}]}], "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"}}], "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"}}}}

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