Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python
Summary
| CVE | CVE-2026-115522 |
|---|---|
| State | PUBLISHED |
| Assigner | |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-28 05:16:59 UTC |
| Updated | 2026-10-28 05:16:59 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 5.3 MEDIUM from [email protected]
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
Problem Types: CWE-668 | CWE-668 CWE-668 Exposure of Resource to Wrong Sphere
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.3 | MEDIUM | 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/C... |
| 4.0 | CNA | CVSS | 5.3 | MEDIUM | 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 |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
NoneConfidentiality
LowIntegrity
LowAvailability
NoneSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS: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
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Agent Development Kit ADK For Python | affected 1.19.0 1.39.1 semver | Not specified | |
| CNA | Agent Development Kit ADK For Python | affected 2.0.0a1 2.7.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/google/adk-python/commit/c27d8688ed9ea619587ad96cbfd641c34dd7... | [email protected] | github.com | |
| github.com/google/adk-python/commit/0ae2bffdd2628af6c8643bc4fd40c2f49f0c... | [email protected] | github.com | |
| github.com/google/adk-python/releases/tag/v1.39.1 | [email protected] | github.com | |
| github.com/google/adk-python/pull/5619 | [email protected] | github.com | |
| github.com/google/adk-python/issues/5618 | [email protected] | github.com | |
| github.com/google/adk-python/commit/f72f0db58c5c1f4e8b8d4f04b8c592c9e49c... | [email protected] | github.com | |
| github.com/google/adk-python/releases/tag/v2.7.0 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: @Nant361 (en)
Additional Advisory Data
Solutions
CNA: 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.
There are currently no legacy QID mappings associated with this CVE.