CVE-2026-107295

{"id": "CVE-2026-107295", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-107295", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-08T17:53:16.989703Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "pydantic", "product": "pydantic-ai", "versions": [{"status": "affected", "version": ">= 1.34.0, < 1.107.4"}, {"status": "affected", "version": ">= 2.0.0b1, < 2.28.0"}]}, {"vendor": "pydantic", "product": "pydantic-ai-slim", "versions": [{"status": "affected", "version": ">= 1.34.0, < 1.107.4"}, {"status": "affected", "version": ">= 2.0.0b1, < 2.28.0"}]}]}], "published": "2026-10-08T17:17:15.237", "references": [{"url": "https://github.com/pydantic/pydantic-ai/commit/d2690201a1834005d382dbf5c47e0ed94ef8bf46", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/commit/dd2abbdfa029c9ad138e7cc0edd2eaeaf9ed69c0", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/pull/7382", "tags": ["Patch", "Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/pull/7383", "tags": ["Patch", "Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.4", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/releases/tag/v2.28.0", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-h4xc-3qfq-jf93", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 1.107.4 and 2.28.0, the Agent.to_web() and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a browser-compatible request to a loopback-hosted chat server, causing the served agent to run and execute tools with the privileges and credentials of the local process; client-relayed approval decisions also leave requires_approval=True tools exposed. Binding to localhost does not prevent a browser page from reaching the loopback address. This issue is fixed in versions 1.107.4 and 2.28.0."}], "lastModified": "2026-10-13T14:16:53.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "6A8C115B-3868-4386-840D-F627698C5C89", "versionEndExcluding": "1.107.4", "versionStartIncluding": "1.34.0"}, {"criteria": "cpe:2.3:a:pydantic:pydantic_ai:*:-:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "87901956-7658-4465-B845-A4A0A2F0E902", "versionEndExcluding": "2.28.0", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}