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3 vulnerabilities by pydantic

CVE-2026-25580 (GCVE-0-2026-25580)

Vulnerability from cvelistv5 – Published: 2026-02-06 21:01 – Updated: 2026-02-09 15:27
VLAI?
Title
Pydantic AI Affected by Server-Side Request Forgery (SSRF) in URL Download Handling
Summary
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 0.0.26 to before 1.56.0, aServer-Side Request Forgery (SSRF) vulnerability exists in Pydantic AI's URL download functionality. When applications accept message history from untrusted sources, attackers can include malicious URLs that cause the server to make HTTP requests to internal network resources, potentially accessing internal services or cloud credentials. This vulnerability only affects applications that accept message history from external users. This vulnerability is fixed in 1.56.0.
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Vendor Product Version
pydantic pydantic-ai Affected: >= 0.0.26, < 1.56.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-25640 (GCVE-0-2026-25640)

Vulnerability from cvelistv5 – Published: 2026-02-06 20:01 – Updated: 2026-02-06 20:16
VLAI?
Title
Pydantic AI affected by Stored XSS via Path Traversal in Web UI CDN URL
Summary
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 to before 1.51.0, a path traversal vulnerability in the Pydantic AI web UI allows an attacker to serve arbitrary JavaScript in the context of the application by crafting a malicious URL. In affected versions, the CDN URL is constructed using a version query parameter from the request URL. This parameter is not validated, allowing path traversal sequences that cause the server to fetch and serve attacker-controlled HTML/JavaScript from an arbitrary source on the same CDN, instead of the legitimate chat UI package. If a victim clicks the link or visits it via an iframe, attacker-controlled code executes in their browser, enabling theft of chat history and other client-side data. This vulnerability only affects applications that use Agent.to_web to serve a chat interface and clai web to serve a chat interface from the CLI. These are typically run locally (on localhost), but may also be deployed on a remote server. This vulnerability is fixed in 1.51.0.
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
pydantic pydantic-ai Affected: >= 1.34.0, < 1.51.0
Create a notification for this product.
Show details on NVD website

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CVE-2024-3772 (GCVE-0-2024-3772)

Vulnerability from cvelistv5 – Published: 2024-04-15 01:42 – Updated: 2025-02-13 17:53
VLAI?
Title
Regular expression denial of service in Pydantic < 2.4.0
Summary
Regular expression denial of service in Pydanic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a crafted email string.
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
Impacted products
Vendor Product Version
Pydantic Pydantic Affected: 2.0 , < 2.4.0 (semver)
Affected: 1.0 , < 1.10.13 (semver)
Create a notification for this product.
Credits
Sajeeb Lohani
Show details on NVD website

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