Is this vulnerability remotely exploitable over the internet?

Yes, but only in applications that accept message history or similar content from external users and pass that content into Pydantic AI workflows that perform URL downloads. In such cases, an attacker over the network can influence which URLs the server calls.

What level of access does an attacker need to exploit this?

The attacker needs the ability to supply or manipulate the message history or input that the application feeds into Pydantic AI agents. They do not need shell or local access; standard application-level access (e.g., sending chat messages or API calls) can be sufficient if those inputs can affect URLs fetched by the backend.

What is the safest general fix pattern?

The most robust approach is to ensure that any URL fetching functionality: - Only connects to a tightly controlled allowlist of domains or services, and - Rejects destinations that resolve to internal, loopback, or metadata IPs, and - Separates user-provided content from the decision of whether and where to make outbound HTTP requests.

Severity:

HIGH RISK

(8.6)

Server-Side Request Forgery (CWE-918) in Pydantic AI URL Download Functionality

CVE-2026-25580

Published:

Feb 6, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal network resources and sensitive metadata via server-initiated HTTP requests

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal network resources and sensitive metadata via server-initiated HTTP requests

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Server-Side Request Forgery (CWE-918) in Pydantic AI URL Download Functionality

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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