CVE-2026-25580

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.

Affected Software

Weaknesses

• CWE-918: CWE-918: Server-Side Request Forgery (SSRF)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

Pydantic AI: Pydantic AI: Information disclosure via Server-Side Request Forgery (SSRF) through malicious URLs in message history.

Additional References

• https://access.redhat.com/security/cve/CVE-2026-25580
• https://bugzilla.redhat.com/show_bug.cgi?id=2437781
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25580.json

References

• https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-2jrp-274c-jhv3
• https://github.com/pydantic/pydantic-ai/commit/d398bc9d39aecca6530fa7486a410d5cce936301

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