{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-0865", "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22", "state": "PUBLISHED", "assignerShortName": "PSF", "dateReserved": "2026-01-12T16:07:56.781Z", "datePublished": "2026-01-20T21:26:15.274Z", "dateUpdated": "2026-01-20T22:58:10.287Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "CPython", "vendor": "Python Software Foundation", "versions": [{"lessThan": "3.15.0", "status": "affected", "version": "0", "versionType": "python"}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "User-controlled header names and values containing newlines can allow injecting HTTP headers."}], "value": "User-controlled header names and values containing newlines can allow injecting HTTP headers."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 5.9, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-74", "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "28c92f92-d60d-412d-b760-e73465c3df22", "shortName": "PSF", "dateUpdated": "2026-01-20T22:58:10.287Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/python/cpython/pull/143917"}, {"tags": ["issue-tracking"], "url": "https://github.com/python/cpython/issues/143916"}, {"tags": ["vendor-advisory"], "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/BJ6QPHNSHJTS3A7CFV6IBMCAP2DWRVNT/"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/22e4d55285cee52bc4dbe061324e5f30bd4dee58"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/23e3c0ae867cca0130e441e776c9955b9027c510"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/4802b96a2cde58570c24c13ef3289490980961c5"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/f7fceed79ca1bceae8dbe5ba5bc8928564da7211"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/2f840249550e082dc351743f474ba56da10478d2"}, {"tags": ["patch"], "url": "https://github.com/python/cpython/commit/e4846a93ac07a8ae9aa18203af0dd13d6e7a6995"}], "source": {"discovery": "UNKNOWN"}, "title": "wsgiref.headers.Headers allows header newline injection", "x_generator": {"engine": "Vulnogram 0.5.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "User-controlled header names and values containing newlines can allow injecting HTTP headers."}], "id": "CVE-2026-0865", "lastModified": "2026-01-20T23:16:05.933", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@python.org", "type": "Secondary"}]}, "published": "2026-01-20T22:15:52.800", "references": [{"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/22e4d55285cee52bc4dbe061324e5f30bd4dee58"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/23e3c0ae867cca0130e441e776c9955b9027c510"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/2f840249550e082dc351743f474ba56da10478d2"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/4802b96a2cde58570c24c13ef3289490980961c5"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/e4846a93ac07a8ae9aa18203af0dd13d6e7a6995"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/f7fceed79ca1bceae8dbe5ba5bc8928564da7211"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/issues/143916"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/pull/143917"}, {"source": "cna@python.org", "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/BJ6QPHNSHJTS3A7CFV6IBMCAP2DWRVNT/"}], "sourceIdentifier": "cna@python.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "cna@python.org", "type": "Secondary"}]}

{}

{}