Lenient parsing of integers for response body and chunk framing

{
  "id": "f14d3c28476dba1d06dfd97ebea9dc8e44035fea0eb4236d545208ed2dc5f343",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-103995",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Lenient parsing of integers for response body and chunk framing",
    "summary": "Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.",
    "evidence": "cve:CVE-2026-103995",
    "products": [
      {
        "name": {
          "value": "CPython",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-103995",
      "aliases": [
        "CVE-2026-103995"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "NOT_DEFINED",
            "baseScore": 2,
            "Automatable": "NOT_DEFINED",
            "attackVector": "NETWORK",
            "baseSeverity": "LOW",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
            "exploitMaturity": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "userInteraction": "PASSIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "HIGH",
            "subIntegrityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/python/cpython",
          "vendor": "Python Software Foundation",
          "modules": [
            "http.client",
            "http"
          ],
          "product": "CPython",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "3.16.0",
              "versionType": "python"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T00:33:14.944Z",
      "provider": "cve",
      "references": [
        "https://github.com/python/cpython/pull/150752",
        "https://github.com/python/cpython/issues/150751",
        "https://github.com/python/cpython/commit/2eb2af805c156ca52b316bb4ced5e0ab3971d0ae",
        "https://github.com/python/cpython/commit/9f52b443c002cccfb54bda0706a9276b6b4a109d"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
          "shortName": "PSF",
          "dateUpdated": "2026-10-28T00:33:14.944Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-103995",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 402557,
  "published_at": "2026-10-27T19:58:52.521+00:00"
}