What is CVE-2026-65975?

CVE-2026-65975 is a medium-severity vulnerability in Pydantic Pydantic-ai, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-07-29.

How severe is CVE-2026-65975?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Pydantic Pydantic-ai

CVE-2026-65975

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. In versions 1.88.0 up to but not including 1.107.1 and 2.0.0b1 up to but not including 2.5.0, the UI adapters (AG-UI via Agent.to_ag_ui()/A…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Pydantic Pydantic-ai — versions >= 1.88.0, < 1.107.1, >= 2.0.0b1, < 2.5.0
Pydantic Pydantic-ai-slim — versions >= 1.88.0, < 1.107.1, >= 2.0.0b1, < 2.5.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-65975?: CVE-2026-65975 is a medium-severity vulnerability in Pydantic Pydantic-ai, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-07-29.
How severe is CVE-2026-65975?: Medium severity. CVSS v3 base score is 6.5 out of 10.