---
title: "CVE-2026-4810: Google Agent Development Kit (ADK) has a Code Injection and Missing Authentication vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-4810/
description: "CVE-2026-4810 (google-adk (PyPI)): A Code Injection and Missing Authentication vulnerability in Google Agent Development Kit (ADK) versions 1.7.0 (and…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-04-13
date_modified: 2026-04-24
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-4810"
kev: false
cvss: 9.3
epss: 0.02211
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-4810: Google Agent Development Kit (ADK) has a Code Injection and Missing Authentication vulnerability

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 2.2% , percentile 82: FIRST’s model estimates a 2.2% chance of exploitation activity in the next 30 days, higher than 82% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes google-adk (PyPI) >= 2.0.0a1, < 2.0.0a2, fixed in 2.0.0a2 ; google-adk (PyPI) >= 1.7.0, < 1.28.1, fixed in 1.28.1 . Check your lockfile, including transitive dependencies.

## What it is

A Code Injection and Missing Authentication vulnerability in Google Agent Development Kit (ADK) versions 1.7.0 (and 2.0.0a1) through 1.28.1 (and 2.0.0a2) on Python (OSS), Cloud Run, and GKE allows an unauthenticated remote attacker to execute arbitrary code on the server hosting the ADK instance. This vulnerability was patched in versions 1.28.1 and 2.0.0a2. Customers need to redeploy the upgraded ADK to their production environments. In addition, if they are running ADK Web locally, they also need to upgrade their local instance.

## Affected packages

- PyPI `google-adk` >= 2.0.0a1, < 2.0.0a2 → fixed: 2.0.0a2
- PyPI `google-adk` >= 1.7.0, < 1.28.1 → fixed: 1.28.1

## Affected products (CVE record)

- Google Cloud Agent Development Kit (ADK): 1.7.0 < 1.28.1, 2.0.0a1 < 2.0.0a2

## Severity

- GoogleCloud CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/U:Amber`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/U:Amber`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 2.21% probability of exploitation activity in the next 30 days; percentile 82.

## Sources

- [GitHub Advisory GHSA-rg7c-g689-fr3x](https://github.com/advisories/GHSA-rg7c-g689-fr3x)
- [CVE.org record CVE-2026-4810](https://www.cve.org/CVERecord?id=CVE-2026-4810)
- [NVD entry CVE-2026-4810](https://nvd.nist.gov/vuln/detail/CVE-2026-4810)
- [github.com](https://github.com/google/adk-python/blob/main/CHANGELOG.md#1274-2026-03-26)

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Source page: https://erroneo.us/security/cve/CVE-2026-4810/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt