50 matches found
Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
SummarySeveral remote-content download paths in Pydantic AI buffered the entire HTTP response body into memory before enforcing any size limit. An application that exposes the local web-fetch tool webfetchtool, or the WebFetch capability's local fallback to untrusted prompts can be driven to fetc...
PYSEC-2026-4289 Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
Summary Several remote-content download paths in Pydantic AI buffered the entire HTTP response body into memory before enforcing any size limit. An application that exposes the local web-fetch tool webfetchtool, or the WebFetch capability's local fallback to untrusted prompts can be driven to fet...
Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
SummarySeveral remote-content download paths in Pydantic AI buffered the entire HTTP response body into memory before enforcing any size limit. An application that exposes the local web-fetch tool webfetchtool, or the WebFetch capability's local fallback to untrusted prompts can be driven to fetc...
Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv6 zone identifiers
SummaryWhen an application using Pydantic AI opts a URL into local network access — either a FileUrl with forcedownload='allow-local', or webfetchtoolallowlocalurls=True — the cloud-metadata blocklist could be bypassed by appending an IPv6 zone identifier to a metadata address for example...
PYSEC-2026-4286 Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
Summary The local web-fetch tool webfetchtool, also used as the WebFetch capability's local fallback processed responses with several steps whose running time grows quadratically with the size of certain server-controlled inputs, and ran them on the event loop: decoding the body with whichever...
PYSEC-2026-4277 Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
Summary The local web-fetch tool webfetchtool, also used as the WebFetch capability's local fallback processed responses with several steps whose running time grows quadratically with the size of certain server-controlled inputs, and ran them on the event loop: decoding the body with whichever...
Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
SummaryThe local web-fetch tool webfetchtool, also used as the WebFetch capability's local fallback processed responses with several steps whose running time grows quadratically with the size of certain server-controlled inputs, and ran them on the event loop: decoding the body with whichever...
Server-side Request Forgery (SSRF)
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 through the webfetchtool process. An attacker can access restricted hosts by supplying a hostname that is normalized...
Server-side Request Forgery (SSRF)
Overview pydantic-ai is an AI Agent Framework, the Pydantic way Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the webfetchtool process. An attacker can access restricted hosts by supplying a hostname that is normalized differently by the resolver,...
CVE-2026-107294
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107290
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.6 and 2.44.0, the local webfetchtool and the WebFetch local fallback process server-controlled responses with quadratic title extraction, whitespace normalization, and...
Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
Summary Several remote-content download paths in Pydantic AI buffered the entire HTTP response body into memory before enforcing any size limit. An application that exposes the local web-fetch tool webfetchtool, or the WebFetch capability's local fallback to untrusted prompts can be driven to fet...
EUVD-2026-95104
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107294 Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107294
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107294 Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107294 Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, webfetchtool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An...
CVE-2026-107294
The Pydantic AI Python agent framework is vulnerable to an unbounded memory exhaustion issue in versions 1.77.0 through 1.107.2 and 2.24.0 . The web_fetch_tool , WebFetch local fallback , and remote FileUrl media downloads (including ImageUrl , DocumentUrl , VideoUrl , and AudioUrl ) buffer the e...
GHSA-FPF4-VWCP-V4HP Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
Summary The local web-fetch tool webfetchtool, also used as the WebFetch capability's local fallback processed responses with several steps whose running time grows quadratically with the size of certain server-controlled inputs, and ran them on the event loop: decoding the body with whichever...
Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
Summary The local web-fetch tool webfetchtool, also used as the WebFetch capability's local fallback processed responses with several steps whose running time grows quadratically with the size of certain server-controlled inputs, and ran them on the event loop: decoding the body with whichever...