https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 09 Oct 2026 21:21:28 +0000 https://vulnerability.circl.lu/vuln/brew-oterm-cve-2026-107290 <p><strong>Affected:</strong> Homebrew: oterm</p> <p>### Summary</p> <p>The local web-fetch tool (`web_fetch_tool`, also used as the `WebFetch` capability&#39;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 charset the server declared, extracting the page title with a backtracking regular expression, and converting the HTML to markdown. An application that exposes this tool to untrusted prompts can be steered to fetch an attacker-controlled page of a megabyte or two that blocks the event loop for minutes, stalling every other coroutine in the process — other agent runs, other requests being served — for the duration.</p> <p>This is an **availability** issue only. SSRF protections and the download size limit introduced in GHSA-v2xh-2vp8-57h8 are unaffected; that limit bounds how much is downloaded, not how long the response takes to process.</p> <p>### Details</p> <p>Title extraction used a backtracking pattern over the raw response body, so a body made of repeated unterminated tag openings cost time proportional to the square of its size. The HTML-to-markdown conversion had the same shape in three of its steps: normalizing whitespace, stripping preformatted blocks, and numbering ordered lists all took time proportional to the square of a run of spaces or a list&#39;s length. All of it ran on the event loop, and the regex steps hold the interpreter lock even when moved off it, so the whole process…</p> <p><strong>Affected:</strong> Homebrew: oterm</p> <p>### Summary</p> <p>The local web-fetch tool (`web_fetch_tool`, also used as the `WebFetch` capability&#39;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 charset the server declared, extracting the page title with a backtracking regular expression, and converting the HTML to markdown. An application that exposes this tool to untrusted prompts can be steered to fetch an attacker-controlled page of a megabyte or two that blocks the event loop for minutes, stalling every other coroutine in the process — other agent runs, other requests being served — for the duration.</p> <p>This is an **availability** issue only. SSRF protections and the download size limit introduced in GHSA-v2xh-2vp8-57h8 are unaffected; that limit bounds how much is downloaded, not how long the response takes to process.</p> <p>### Details</p> <p>Title extraction used a backtracking pattern over the raw response body, so a body made of repeated unterminated tag openings cost time proportional to the square of its size. The HTML-to-markdown conversion had the same shape in three of its steps: normalizing whitespace, stripping preformatted blocks, and numbering ordered lists all took time proportional to the square of a run of spaces or a list&#39;s length. All of it ran on the event loop, and the regex steps hold the interpreter lock even when moved off it, so the whole process…</p> https://vulnerability.circl.lu/vuln/brew-oterm-cve-2026-107290 https://vulnerability.circl.lu/vuln/cve-2026-107290 <p><strong>Affected:</strong> pydantic-ai, pydantic-ai-slim</p> <p>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 web_fetch_tool and the WebFetch local fallback process server-controlled responses with quadratic title extraction, whitespace normalization, and ordered-list numbering. An attacker-controlled page of modest size can therefore block the event loop for an extended period, stalling other agent runs and requests, while unsupported codecs or excessive HTML or JSON nesting can abort an individual run. This issue is fixed in versions 1.107.6 and 2.44.0.</p> <p><strong>Affected:</strong> pydantic-ai, pydantic-ai-slim</p> <p>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 web_fetch_tool and the WebFetch local fallback process server-controlled responses with quadratic title extraction, whitespace normalization, and ordered-list numbering. An attacker-controlled page of modest size can therefore block the event loop for an extended period, stalling other agent runs and requests, while unsupported codecs or excessive HTML or JSON nesting can abort an individual run. This issue is fixed in versions 1.107.6 and 2.44.0.</p> https://vulnerability.circl.lu/vuln/cve-2026-107290