{"api_version":"1","generated_at":"2026-10-28T08:02:43+00:00","cve":"CVE-2026-115522","urls":{"html":"https://cve.report/CVE-2026-115522","api":"https://cve.report/api/cve/CVE-2026-115522.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-115522","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115522"},"summary":{"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.","state":"PUBLISHED","assigner":"Google","published_at":"2026-10-28 05:16:59","updated_at":"2026-10-28 05:16:59"},"problem_types":["CWE-668","CWE-668 CWE-668 Exposure of Resource to Wrong Sphere"],"metrics":[{"version":"4.0","source":"cve-coordination@google.com","type":"Secondary","score":"5.3","severity":"MEDIUM","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","data":{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"5.3","severity":"MEDIUM","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","data":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"}}],"references":[{"url":"https://github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7340c","name":"https://github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7340c","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c6bd4","name":"https://github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c6bd4","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/releases/tag/v1.39.1","name":"https://github.com/google/adk-python/releases/tag/v1.39.1","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/pull/5619","name":"https://github.com/google/adk-python/pull/5619","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/issues/5618","name":"https://github.com/google/adk-python/issues/5618","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49cbe9e","name":"https://github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49cbe9e","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/adk-python/releases/tag/v2.7.0","name":"https://github.com/google/adk-python/releases/tag/v2.7.0","refsource":"cve-coordination@google.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-115522","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115522","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Google","product":"Agent Development Kit (ADK) for Python","version":"affected 1.19.0 1.39.1 semver","platforms":[]},{"source":"CNA","vendor":"Google","product":"Agent Development Kit (ADK) for Python","version":"affected 2.0.0a1 2.7.0 semver","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","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.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"@Nant361","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"google-adk","product":"Agent Development Kit (ADK) for Python","repo":"https://github.com/google/adk-python","vendor":"Google","versions":[{"lessThan":"1.39.1","status":"affected","version":"1.19.0","versionType":"semver"},{"lessThan":"2.7.0","status":"affected","version":"2.0.0a1","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"@Nant361"}],"datePublic":"2026-07-29T00:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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>"}],"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."}],"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-668","description":"CWE-668 Exposure of Resource to Wrong Sphere","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-28T04:36:49.927Z","orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google"},"references":[{"tags":["issue-tracking","exploit"],"url":"https://github.com/google/adk-python/issues/5618"},{"tags":["patch"],"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":["release-notes"],"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"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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>"}],"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."}],"source":{"discovery":"EXTERNAL"},"title":"Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python","x_generator":{"engine":"Vulnogram 1.0.2"}}},"cveMetadata":{"assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","assignerShortName":"Google","cveId":"CVE-2026-115522","datePublished":"2026-10-28T04:36:49.927Z","dateReserved":"2026-10-22T18:18:29.284Z","dateUpdated":"2026-10-28T04:36:49.927Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-28 05:16:59","lastModifiedDate":"2026-10-28 05:16:59","problem_types":["CWE-668","CWE-668 CWE-668 Exposure of Resource to Wrong Sphere"],"metrics":{"cvssMetricV40":[{"source":"cve-coordination@google.com","type":"Secondary","cvssData":{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"115522","Ordinal":"1","Title":"Cross-Application Artifact Namespace Isolation in Google Agent D","CVE":"CVE-2026-115522","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"115522","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Cross-Application Artifact Namespace Isolation in Google Agent D"}]}}}