CVE-2026-25580
From 0.0.26 to before 1.56.0, aServer-Side Request Forgery (SSRF) vulnerability exists in Pydantic AI's URL download functionality.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- pydantic/pydantic ai
- Source
- security-advisories@github.com
References
- https://github.com/pydantic/pydantic-ai/commit/d398bc9d39aecca6530fa7486a410d5cce936301Patch
- https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-2jrp-274c-jhv3Exploit, Mitigation, Vendor Advisory
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.