Pydantic AI vulnerabilities and CVEs
The Beam CVE database tracks 14 security advisories for Pydantic AI: 4 high, 8 medium and 2 low severity. The newest is CVE-2026-107286, published Oct 8, 2026 and fixed in 2.53.0.
A Python agent framework from the Pydantic team.
Check your version: pip show pydantic-ai or pip show pydantic-ai-slim
- Vulnerabilities tracked
- 14
- Critical
- 0
- Known exploited (CISA KEV)
- 0
- Published in the last 30 days
- 9
All entries, newest first
CVE-2026-107286
Pydantic AI: Concurrency-limited models can keep their slot when a streamed request ends early
high7.5Oct 8, 2026CVE-2026-107287
Pydantic AI: Excessive resource use when local web fetching converts nested HTML
medium6.5Oct 8, 2026CVE-2026-107289
Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv6 zone identifiers
medium6.8Oct 8, 2026CVE-2026-107290
Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
medium6.5Oct 8, 2026CVE-2026-107291
Pydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False`
low2.3Oct 8, 2026CVE-2026-107292
Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): the local chat endpoint does not validate the `Host` header
medium6.4Oct 8, 2026CVE-2026-107293
Pydantic AI OpenTelemetry instrumentation: retry prompt content is not redacted when `include_content=False`
low2.3Oct 8, 2026CVE-2026-107294
Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
medium6.5Oct 8, 2026CVE-2026-107295
Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): a website visited by the developer can trigger agent runs and server-side tool execution on the local chat endpoint
high7.6Oct 8, 2026CVE-2026-54249
Pydantic AI: Unvalidated UploadedFile references in UI adapters allow server-side file access using the application's credentials
medium6.8Aug 13, 2026CVE-2026-48782
pydantic-ai: SSRF blocklist bypass via IPv4-compatible, SIIT/IVI, and local NAT64 IPv6 addresses (incomplete fix of CVE-2026-46678)
medium6.8Jun 26, 2026CVE-2026-46678
Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv4-mapped IPv6 (Incomplete fix of CVE-2026-25580)
medium6.8May 21, 2026CVE-2026-25580
Pydantic AI has Server-Side Request Forgery (SSRF) in URL Download Handling
high8.6Feb 6, 2026CVE-2026-25640
Pydantic AI has Stored XSS via Path Traversal in Web UI CDN URL
high7.1Feb 6, 2026