{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84379", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-01T16:27:58.130Z", "datePublished": "2026-09-02T17:57:17.092Z", "dateUpdated": "2026-09-02T18:20:46.599Z"}, "containers": {"cna": {"title": "HTTPX2: Multipart part header injection via unvalidated file Content-Type and custom headers", "problemTypes": [{"descriptions": [{"cweId": "CWE-93", "lang": "en", "description": "CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6"}, {"name": "https://github.com/pydantic/httpx2/pull/1142", "tags": ["x_refsource_MISC"], "url": "https://github.com/pydantic/httpx2/pull/1142"}, {"name": "https://github.com/pydantic/httpx2/commit/de96d810ee4e309d118982fe7084a46a2bcd600d", "tags": ["x_refsource_MISC"], "url": "https://github.com/pydantic/httpx2/commit/de96d810ee4e309d118982fe7084a46a2bcd600d"}, {"name": "https://github.com/pydantic/httpx2/releases/tag/v2.11.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/pydantic/httpx2/releases/tag/v2.11.0"}], "affected": [{"vendor": "pydantic", "product": "httpx2", "versions": [{"version": "< 2.11.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-02T17:57:17.092Z"}, "descriptions": [{"lang": "en", "value": "HTTPX2 is a next generation HTTP client for Python. Prior to 2.11.0, FileField.render_headers() in src/httpx2/httpx2/_multipart.py directly interpolates attacker-controlled content_type values and custom headers from the files= three-element (filename, content, content_type) tuple and the files= four-element (filename, content, content_type, headers) tuple into multipart/form-data part headers without validating header names or values. CR or LF characters can terminate a part header, inject additional part headers, or end the part header block early, allowing a downstream multipart parser to treat attacker-supplied lines as genuine headers and potentially alter part semantics or bypass header-based checks. This issue is fixed in version 2.11.0."}], "source": {"advisory": "GHSA-h4x7-gw46-3wm6", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-02T18:20:04.628894Z", "id": "CVE-2026-84379", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-02T18:20:46.599Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "httpx2", "vendor": "pydantic", "versions": [{"status": "affected", "version": "< 2.11.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HTTPX2 is a next generation HTTP client for Python. Prior to 2.11.0, FileField.render_headers() in src/httpx2/httpx2/_multipart.py directly interpolates attacker-controlled content_type values and custom headers from the files= three-element (filename, content, content_type) tuple and the files= four-element (filename, content, content_type, headers) tuple into multipart/form-data part headers without validating header names or values. CR or LF characters can terminate a part header, inject additional part headers, or end the part header block early, allowing a downstream multipart parser to treat attacker-supplied lines as genuine headers and potentially alter part semantics or bypass header-based checks. This issue is fixed in version 2.11.0."}], "id": "CVE-2026-84379", "lastModified": "2026-09-02T19:18:08.010", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84379", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-02T18:20:04.628894Z", "version": "2.0.3"}}]}, "published": "2026-09-02T18:21:29.300", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/pydantic/httpx2/commit/de96d810ee4e309d118982fe7084a46a2bcd600d"}, {"source": "security-advisories@github.com", "url": "https://github.com/pydantic/httpx2/pull/1142"}, {"source": "security-advisories@github.com", "url": "https://github.com/pydantic/httpx2/releases/tag/v2.11.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-93"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "httpx2: HTTPX2: Multipart header injection via unvalidated input", "id": "2527696", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527696"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-93", "details": ["A flaw was found in HTTPX2, a Python HTTP client. A remote attacker could exploit this vulnerability by sending specially crafted multipart/form-data requests. The `FileField.render_headers()` function fails to validate `Content-Type` values and custom headers, allowing the injection of Carriage Return (CR) or Line Feed (LF) characters. This could lead to the injection of arbitrary part headers, potentially altering the interpretation of multipart data or bypassing security checks by a downstream parser."], "name": "CVE-2026-84379", "package_state": [{"cpe": "cpe:/a:redhat:lightspeed_core", "fix_state": "Fix deferred", "package_name": "lightspeed-core/lightspeed-stack-rhel9", "product_name": "Lightspeed Core"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-automl-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-autogluon-server-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-storage-initializer-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-09-02T17:57:17Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-84379\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-84379\nhttps://github.com/pydantic/httpx2/commit/de96d810ee4e309d118982fe7084a46a2bcd600d\nhttps://github.com/pydantic/httpx2/pull/1142\nhttps://github.com/pydantic/httpx2/releases/tag/v2.11.0\nhttps://github.com/pydantic/httpx2/security/advisories/GHSA-h4x7-gw46-3wm6"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.11.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "httpx2", "source": "cna", "vendor": "pydantic"}, "product": "httpx2", "vendor": "pydantic"}], "created": "2026-09-03T11:00:03.818013+00:00", "updated": "2026-09-03T15:34:00.852520+00:00", "vendors": ["pydantic", "pydantic$PRODUCT$httpx2"]}