{
  "cvss": 2.1,
  "datePublished": "2025-12-01T18:16:04.380",
  "dateUpdated": "2026-09-03T03:15:21.037",
  "description": "When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues",
  "id": "CVE-2025-13837",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "modules": [
              "plistlib"
            ],
            "product": "CPython",
            "repo": "https://github.com/python/cpython",
            "vendor": "Python Software Foundation",
            "versions": [
              {
                "lessThan": "3.10.20",
                "status": "affected",
                "version": "0",
                "versionType": "python"
              },
              {
                "lessThan": "3.11.15",
                "status": "affected",
                "version": "3.11.0",
                "versionType": "python"
              },
              {
                "lessThan": "3.12.13",
                "status": "affected",
                "version": "3.12.0",
                "versionType": "python"
              },
              {
                "lessThan": "3.13.10",
                "status": "affected",
                "version": "3.13.0",
                "versionType": "python"
              },
              {
                "lessThan": "3.14.1",
                "status": "affected",
                "version": "3.14.0",
                "versionType": "python"
              },
              {
                "lessThan": "3.15.0a3",
                "status": "affected",
                "version": "3.15.0a1",
                "versionType": "python"
              }
            ]
          }
        ],
        "source": "cna@python.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "B02C195C-8271-4207-9FE9-E46C7A4978AE",
                "versionEndExcluding": "3.13.10",
                "vulnerable": true
              },
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                "matchCriteriaId": "6E66BA7A-987F-4E24-8B69-4F46D6FCD19E",
                "versionEndExcluding": "3.14.1",
                "versionStartIncluding": "3.14.0",
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                "matchCriteriaId": "A3327507-0B1D-4F28-A983-D07A2C8A7696",
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              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues"
      },
      {
        "lang": "es",
        "value": "Al cargar un archivo plist, el módulo plistlib lee datos en un tamaño especificado por el propio archivo, lo que significa que un archivo malicioso puede causar problemas de OOM y DoS."
      }
    ],
    "id": "CVE-2025-13837",
    "lastModified": "2026-09-03T03:15:21.037",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "cvssMetricV40": [
        {
          "cvssData": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 2.1,
            "baseSeverity": "LOW",
            "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": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:L/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": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "source": "cna@python.org",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2025-13837",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2025-12-01T18:23:28.615317Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2025-12-01T18:16:04.380",
    "references": [
      {
        "source": "cna@python.org",
        "url": "https://github.com/python/cpython/commit/568342cfc8f002d9a15f30238f26b9d2e0e79036"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/python/cpython/commit/5a8b19677d818fb41ee55f310233772e15aa1a2b"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/python/cpython/commit/694922cf40aa3a28f898b5f5ee08b71b4922df70"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/python/cpython/commit/71fa8eb8233b37f16c88b6e3e583b461b205d1ba"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/python/cpython/commit/b64441e4852383645af5b435411a6f849dd1b4cb"
      },
      {
        "source": "cna@python.org",
        "url": "https://github.com/python/cpython/commit/cefee7d118a26ef6cd43db59bb9d98ca9a331111"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Issue Tracking",
          "Patch"
        ],
        "url": "https://github.com/python/cpython/issues/119342"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Issue Tracking",
          "Patch"
        ],
        "url": "https://github.com/python/cpython/pull/119343"
      },
      {
        "source": "cna@python.org",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/2X5IBCJXRQAZ5PSERLHMSJFBHFR3QM2C/"
      }
    ],
    "sourceIdentifier": "cna@python.org",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-400"
          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "severity": "LOW",
  "source": "nvd",
  "title": "When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious f..."
}