CVE-2026-1502

{
  "id": "CVE-2026-1502",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-10T18:16:40.970",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "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 túnel proxy del cliente HTTP o el host."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Python Software Foundation",
          "product": "CPython",
          "defaultStatus": "unaffected",
          "packageName": "http.client",
          "repo": "https://github.com/python/cpython",
          "versions": [
            {
              "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",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "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",
          "baseScore": 5.7,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "HIGH",
          "userInteraction": "PASSIVE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-13T16:08:30.380828Z",
          "id": "CVE-2026-1502",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/56b7100b04e44ea27989242b176beb8f016b2c53",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/58703ec1bdd1eb075e8b01a0c427683ce594dd3e",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/9e071c9b28c17f347f81b388a003d4eeb3c7a8dd",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/b1cf9016335cb637c5a425032e8274a224f4b2ed",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/commit/c00c386faa579ad71196d33408644478488e43ec",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/issues/146211",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/python/cpython/pull/146212",
      "source": "[email protected]"
    },
    {
      "url": "https://mail.python.org/archives/list/[email protected]/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/",
      "source": "[email protected]"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/04/11/4",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}