{"id":"CVE-2026-107294","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107294","generatedAt":"2026-10-27T23:59:15.114Z","title":"From 1.77.0 until 1.107.2 and 2.24.0, web_fetch_tool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls.","description":"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, web_fetch_tool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An attacker-influenced URL can stream an arbitrarily large response that exhausts process memory and crashes the worker; affected media types include ImageUrl, DocumentUrl, VideoUrl, and AudioUrl. SSRF protections remain effective, and the impact is limited to availability. This issue is fixed in versions 1.107.2 and 2.24.0.","published":"2026-10-08T17:17:15.000Z","lastModified":"2026-10-13T13:49:02.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400"],"affected":["pydantic/pydantic ai"],"epss":{"score":0.00437,"percentile":0.3772,"date":"2026-10-26","history":[{"date":"2026-10-09","score":0.00434,"percentile":0.35726}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-08T17:17:15.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-08T17:17:15.080Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/7141","tags":["Patch","Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/7308","tags":["Patch","Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0","tags":["Patch","Release Notes","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107294","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}