How severe is CVE-2026-4810?

No CVSS score has been assigned to CVE-2026-4810 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-4810?

CVE-2026-4810 affects the following packages: google-adk (PyPI), google-adk (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2026-4810?

Update google-adk to 1.28.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-4810 is resolved across your whole dependency graph.

How do I detect CVE-2026-4810 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for google-adk, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-4810 if there is no patch (or I can't update yet)?

Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Is CVE-2026-4810 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-4810 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-4810?

CVE-2026-4810 has an EPSS (Exploit Prediction Scoring System) score of 1.8%, placing it in the 79th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-4810?

CVE-2026-4810 is classified as Missing Authentication (CWE-306). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for CVE-2026-4810?

A Nuclei detection template exists for CVE-2026-4810, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2026-4810 published, and has it been updated?

CVE-2026-4810 was published on April 13, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

Not in CISA KEV

CVE-2026-4810 — google-adk

CVE-2026-4810 is a Missing Authentication vulnerability in google-adk. A fix is available for google-adk — see the affected versions and patch details below.

Google Agent Development Kit (ADK) has a Code Injection and Missing Authentication vulnerability

Also known asGHSA-rg7c-g689-fr3xPYSEC-2026-344

Published

Apr 13, 2026

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-4810.

EPSS Exploitation Probability

via FIRST.org ↗

1.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs79th percentile — riskier than 79% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

2 pkgs affected

🐍google-adk🐍google-adk

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`google-adk`	≥ 1.7.0&&< 1.28.1	1.28.1`pip install --upgrade 'google-adk==1.28.1'`
🐍PyPI	`google-adk`	≥ 2.0.0a1&&< 2.0.0a2	2.0.0a2`pip install --upgrade 'google-adk==2.0.0a2'`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for google-adk, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update google-adk to 1.28.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-4810 is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

How to detect CVE-2026-4810

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2026-4810 -u https://target

Template: Google ADK-Python - Unauthenticated Builder Endpoint
Severity: critical
Impact: Unauthenticated remote attackers can execute arbitrary code on the server, leading to full system compromise.
Remediation: Upgrade to versions 1.28.1 and 2.0.0a2 or later and redeploy to production and local environments.

Template by ProjectDiscovery nuclei-templates (dwisiswant0), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

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