What is CVE-2026-54249?

CVE-2026-54249 is a medium-severity vulnerability in Pydantic Pydantic-ai, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-07-29.

How severe is CVE-2026-54249?

Medium severity. CVSS v3 base score is 6.8 out of 10.

SSRF in Pydantic Pydantic-ai

CVE-2026-54249

Pydantic AI is a Python agent framework for building Generative AI applications. In versions 1.65.0 through 1.105.0, and 2.0.0b1 through 2.0.0b5, a client that submits message history to a Pydantic AI UI adapter (such as the Vercel AI adap…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Pydantic Pydantic-ai — versions >= 1.65.0, < 1.106.0, >= 2.0.0b1, < 2.0.0b6
Pydantic Pydantic-ai-slim — versions >= 2.0.0b1, < 2.0.0b6, >= 1.65.0, < 1.106.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54249?: CVE-2026-54249 is a medium-severity vulnerability in Pydantic Pydantic-ai, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-07-29.
How severe is CVE-2026-54249?: Medium severity. CVSS v3 base score is 6.8 out of 10.