CVE-2026-1502

{"id": "CVE-2026-1502", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-1502", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-13T16:08:30.380828Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "cna@python.org", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cna@python.org", "affectedData": [{"repo": "https://github.com/python/cpython", "vendor": "Python Software Foundation", "product": "CPython", "versions": [{"status": "affected", "version": "0", "lessThan": "3.10.21", "versionType": "python"}, {"status": "affected", "version": "3.11.0", "lessThan": "3.11.16", "versionType": "python"}, {"status": "affected", "version": "3.12.0", "lessThan": "3.12.14", "versionType": "python"}, {"status": "affected", "version": "3.13.0", "lessThan": "3.13.14", "versionType": "python"}, {"status": "affected", "version": "3.14.0a1", "lessThan": "3.14.5rc1", "versionType": "python"}, {"status": "affected", "version": "3.15.0a1", "lessThan": "3.15.0b1", "versionType": "python"}], "packageName": "http.client", "defaultStatus": "unaffected"}]}], "published": "2026-04-10T18:16:40.970", "references": [{"url": "https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/56b7100b04e44ea27989242b176beb8f016b2c53", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/58703ec1bdd1eb075e8b01a0c427683ce594dd3e", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/9e071c9b28c17f347f81b388a003d4eeb3c7a8dd", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/b1cf9016335cb637c5a425032e8274a224f4b2ed", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/commit/c00c386faa579ad71196d33408644478488e43ec", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/issues/146211", "source": "cna@python.org"}, {"url": "https://github.com/python/cpython/pull/146212", "source": "cna@python.org"}, {"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/", "source": "cna@python.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/11/4", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-93"}]}], "descriptions": [{"lang": "en", "value": "CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host."}, {"lang": "es", "value": "Los bytes CR/LF no fueron rechazados por los encabezados del t\u00fanel proxy del cliente HTTP o el host."}], "lastModified": "2026-10-26T21:10:00.170", "sourceIdentifier": "cna@python.org"}