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pydantic-ai — Vulnerabilities & Security Advisories 16

All 16 CVE vulnerabilities found in pydantic-ai, with AI-generated Chinese analysis, references, and POCs.

Vendor: pydantic

CVE ID Title CVSS Severity Published
CVE-2026-107295 `pydantic-ai-slim` web UI `/api/chat` accepts browser-simple cross-origin requests that can trigger agent tool execution CWE-352 7.6 High 2026-10-08
CVE-2026-107294 Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl CWE-400 6.5 Medium 2026-10-08
CVE-2026-107293 Pydantic AI OpenTelemetry instrumentation: retry prompt content is not redacted when `include_content=False` CWE-212 2.3 Low 2026-10-08
CVE-2026-107292 Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): the local chat endpoint does not validate the `Host` header CWE-346 6.4 Medium 2026-10-08
CVE-2026-107291 Pydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False` CWE-212 2.3 Low 2026-10-08
CVE-2026-107290 Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch` CWE-1333 6.5 Medium 2026-10-08
CVE-2026-107289 Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv6 zone identifier (incomplete fix for CVE-2026-46678 and CVE-2026-48782) CWE-918 6.8 Medium 2026-10-08
CVE-2026-107288 Pydantic AI: web_fetch_tool blocked_domains bypass via a hostname the resolver normalizes differently CWE-918 3.7 Low 2026-10-08
CVE-2026-107287 Pydantic AI: Excessive resource use when local web fetching converts nested HTML CWE-400 6.5 Medium 2026-10-08
CVE-2026-107286 Pydantic AI: Concurrency-limited models can keep their slot when a streamed request ends early CWE-772 7.5 High 2026-10-08
CVE-2026-54249 VercelAIAdapter trusts client-controlled `providerMetadata` to construct `UploadedFile` — S3/GCS confused deputy via provider metadata injection CWE-918 6.8 Medium 2026-07-29
CVE-2026-46678 Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv4-mapped IPv6 (Incomplete fix of CVE-2026-25580) CWE-918 6.8 Medium 2026-07-29
CVE-2026-65975 Pydantic AI AG-UI Adapter: A dangling client-submitted tool call can execute when a trailing message is dropped during `sanitize_messages` CWE-863 6.5 Medium 2026-07-29
CVE-2026-48782 pydantic-ai: SSRF blocklist bypass via IPv4-compatible, SIIT/IVI, and local NAT64 IPv6 addresses (incomplete fix of CVE-2026-46678) CWE-918 6.8 Medium 2026-06-16
CVE-2026-25580 Pydantic AI Affected by Server-Side Request Forgery (SSRF) in URL Download Handling CWE-918 8.6 High 2026-02-06
CVE-2026-25640 Pydantic AI affected by Stored XSS via Path Traversal in Web UI CDN URL CWE-22 7.1 High 2026-02-06

All 16 known CVE vulnerabilities affecting pydantic-ai with full Chinese analysis, references, and POCs where available.