# CVE-2026-115522: Cross-Application Artifact Namespace Isolation in Google Agent Development Kit (ADK) for Python


- **Severity:** Medium 5.3 (`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`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 28 Oct 2026
- **Updated:** 28 Oct 2026
- **Also known as:** GHSA-hjvp-7px2-52j7

## What is CVE-2026-115522?

CVE-2026-115522 is a medium-severity vulnerability in Google Agent Development Kit (ADK) for Python, published on 28 Oct 2026. 

### Official 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.

Weakness: CWE-668 (Exposure of Resource to Wrong Sphere)

## Which versions are affected by CVE-2026-115522?


## How do I fix CVE-2026-115522?

No fix has been published for CVE-2026-115522 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-115522 being exploited?

There is no known exploitation of CVE-2026-115522 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-115522 and fix it if it is affected.

What it is: CVE-2026-115522 is a medium-severity vulnerability in Google Agent Development Kit (ADK) for Python, published on 28 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-115522 in the wild and no public exploit code.

Affected product: Google Agent Development Kit (ADK) for Python. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-115522/ (Markdown: https://insights.sbomify.com/CVE-2026-115522/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-115522
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-115522
- OSV: https://osv.dev/vulnerability/CVE-2026-115522

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-115522/
Summaries are generated and may contain mistakes; the official description above is the record.