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CVE-2026-107295

7.6 · HIGH

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI.

Published Oct 8, 2026pydanticCWE-352EPSS 0.16%

Overview

CVE-2026-107295 is a high-severity vulnerability affecting pydantic pydantic_ai. It was published on October 8, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 1.107.4 and 2.28.0, the Agent.to_web() and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a browser-compatible request to a loopback-hosted chat server, causing the served agent to run and execute tools with the privileges and credentials of the local process; client-relayed approval decisions also leave requires_approval=True tools exposed. Binding to localhost does not prevent a browser page from reaching the loopback address. This issue is fixed in versions 1.107.4 and 2.28.0.

Remediation

Check the references section for vendor advisories and patches from pydantic. Update pydantic_ai to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
pydanticpydantic_ai>= 1.34.0, < 1.107.4Affected

References

GitHubgithub.com/pydantic/pydantic-ai/commit/d2690201a1834005d382dbf5c47e0ed94ef8bf46GitHubgithub.com/pydantic/pydantic-ai/commit/dd2abbdfa029c9ad138e7cc0edd2eaeaf9ed69c0GitHubgithub.com/pydantic/pydantic-ai/pull/7382GitHubgithub.com/pydantic/pydantic-ai/pull/7383GitHubgithub.com/pydantic/pydantic-ai/releases/tag/v1.107.4GitHubgithub.com/pydantic/pydantic-ai/releases/tag/v2.28.0GitHubgithub.com/pydantic/pydantic-ai/security/advisories/GHSA-h4xc-3qfq-jf93

How CyberStrike helps

Frequently asked questions

What is CVE-2026-107295?

CVE-2026-107295 is a high-severity vulnerability affecting pydantic pydantic_ai. It was published on October 8, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

How severe is CVE-2026-107295?

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-107295?

Check the references section for vendor advisories and patches from pydantic. Update pydantic_ai to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-107295?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-107295 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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