{"id":"CVE-2026-107291","title":"Pydantic AI is a Python agent framework for building applications and workflows with Generative AI","summary":"Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 0.3.4 until 1.107.6 and 2.44.0, OpenTelemetry instrumentation configured with InstrumentationSettings(include_content=False) can sti…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-212","CWE-532"],"vendor":"pydantic","product":"pydantic_ai","affected":["pydantic_ai >= 0.3.4, < 1.107.4","pydantic_ai >= 2.0.0, < 2.44.0"],"patched":["pydantic_ai 2.44.0"],"published":"2026-10-08","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:34:22.207","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107291","references":[{"url":"https://github.com/pydantic/pydantic-ai/commit/4e013c51a50659aba2adf7853bfb22bb77f6a518","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/commit/6b14c74cb281f899a2ae4fae5327111e33f60771","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/commit/7ee27e38ab2e525ca60ff1a25d16413ff989fd79","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/commit/963dec5f70d6f558997fc259356c0090cc5ea487","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/commit/de4e61515327bd80a19cd8552001c30933e6acc3","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/8403","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/8404","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/8408","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/8428","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/pull/8429","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.6","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.44.0","label":"security-advisories@github.com"},{"url":"https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-4x9p-g9wm-8q7f","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-4x9p-g9wm-8q7f"},{"url":"https://github.com/pydantic/pydantic-ai"},{"url":"https://pypi.org/project/pydantic-ai"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107291"},{"url":"https://pypi.org/project/pydantic-ai-slim"}],"tags":["nvd","ghsa","pip","cve.org","osv","score-dispute"],"epss":0.00622,"epssPercentile":0.49592,"aliases":["GHSA-4x9p-g9wm-8q7f","PYSEC-2026-4275","PYSEC-2026-4284"],"ecosystem":"pip","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-08T17:25:09.227835Z"},"scores":{"nvd":4.3,"cna":2.3},"ingestedAt":"2026-10-08T16:52:14.778Z","slug":"CVE-2026-107291","body":"## Overview\n\nPydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 0.3.4 until 1.107.6 and 2.44.0, OpenTelemetry instrumentation configured with InstrumentationSettings(include_content=False) can still export sensitive agent content through exception.message and exception.stacktrace events, error status descriptions, and model_request_parameters containing instructions or the prompted_output_template. The exposed data is available to readers of the configured telemetry backend and can include tool feedback, provider error bodies, runtime instructions, and structured-output templates even though message attributes are redacted. This issue does not grant new access to agent data, and deployments that do not use include_content=False are not affected by the setting bypass. This issue is fixed in versions 1.107.6 and 2.44.0.\n\n## Affected\n\n- `pydantic_ai >= 0.3.4, < 1.107.4`\n- `pydantic_ai >= 2.0.0, < 2.44.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `pydantic_ai 2.44.0`\n\n## Package advisory (CVE-2026-107291)\n\nAffected packages:\n\n- `pydantic-ai >= 0.3.4, < 1.107.6`\n- `pydantic-ai >= 2.0.0b1, < 2.44.0`\n- `pydantic-ai-slim >= 0.3.4, < 1.107.6`\n- `pydantic-ai-slim >= 2.0.0b1, < 2.44.0`\n\nPatched in:\n\n- `pydantic-ai 1.107.6`\n- `pydantic-ai 2.44.0`\n- `pydantic-ai-slim 1.107.6`\n- `pydantic-ai-slim 2.44.0`\n\nSource: https://github.com/advisories/GHSA-4x9p-g9wm-8q7f","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":219717,"id":"CVE-2026-107291","ts":1791905671103,"field":"cvss","old":"2.3","new":"4.3"},{"seq":219716,"id":"CVE-2026-107291","ts":1791905671103,"field":"severity","old":"low","new":"medium"}]}