CVE-2026-107289 Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv6 zone identifier (incomplete fix for CVE-2026-46678 and CVE-2026-48782)

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.56.0 until 1.107.6 and 2.44.0, applications that opt attacker-influenced URLs into local network access through FileUrl with forcedownload='allow-local' or webfetchtool with...

CVE-2026-107289

The Pydantic AI Python agent framework is vulnerable to Server-Side Request Forgery (SSRF) in versions 1.56.0 through 1.107.5 and 2.44.0. When users opt-in to local network access via FileUrl (with force_download='allow-local') or web_fetch_tool (with allow_local_urls=True), an attacker can bypas...

CVE-2025-22870

PoC – CVE-2025-22870 – HTTP Proxy Bypass via IPv6 Zone ID in Go Summary This Proof of Concept demonstrates the exploitation of CVE-2025-22870, a vulnerability in the golang.org/x/net/http/httpproxy package prior to v0.36.0, which can be used to bypass HTTP proxy restrictions by abusing the way IP...

CVE-2025-22870

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NOPROXY environment variable is set to ".example.com", a request to "::1%25.example.com:80 will incorrectly match and not be proxied...