Google Agent Development Kit up to 1.28.0/2.0.0a1 missing authentication

Summaryinfo

A vulnerability classified as critical has been found in Google Agent Development Kit up to 1.28.0/2.0.0a1. Affected is an unknown function. The manipulation leads to missing authentication. This vulnerability is referenced as CVE-2026-4810. Remote exploitation of the attack is possible. No exploit is available. This product is a managed service. This means that users cannot maintain vulnerability countermeasures themselves. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Google Agent Development Kit up to 1.28.0/2.0.0a1 and classified as critical. This issue affects some unknown processing. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality, integrity, and availability. The summary by CVE 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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-4810 since 03/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/13/2026).

Upgrading to version 1.28.1 or 2.0.0a2 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-21900). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Google

Name

• Agent Development Kit

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28.0
• 2.0.0a1

License

• free

Managed Service

• yes

Website

• Vendor: https://www.google.com/

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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