Server-side Request Forgery (SSRF) Affecting pydantic-ai-slim package, versions [1.56.0,1.99.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 May 2026
- disclosed21 May 2026
- creditJ0hndo
Introduced: 21 May 2026
CVE-2026-46678 (opens in a new tab)How to fix?
Upgrade pydantic-ai-slim to version 1.99.0 or higher.
Overview
pydantic-ai-slim is an Agent Framework / shim to use Pydantic with LLMs, slim package
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via incomplete blocklist in is_private_ip function when force_download='allow-local' is enabled. An attacker can access sensitive cloud metadata information by submitting a specially crafted URL containing an IPv4-mapped IPv6, 6to4, or NAT64 encoded address that bypasses the intended blocklist. This is only exploitable if the application explicitly opts for FileUrl (ImageUrl, AudioUrl, VideoUrl, DocumentUrl) in force_download='allow-local' on a URL that is, or could be, influenced by untrusted input.
Note:
This issue is due to incomplete fix for CVE-2026-25580.