{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-102639",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-09-29T19:42:00.000Z",
    "dateReserved": "2026-09-29T19:42:00.000Z",
    "datePublished": "2026-09-29T19:42:00.000Z",
    "state": "RESERVED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-09-29T15:52:48.506Z"
      },
      "title": "MobilityDB 1.3 Out-of-bounds Read DoS via WKB Deserialization",
      "descriptions": [
        {
          "lang": "en",
          "value": "MobilityDB version 1.3 and earlier contains an out-of-bounds read vulnerability in the MEOS binary WKB deserialization logic that allows unprivileged database users to crash the PostgreSQL backend process by supplying a crafted WKB payload with a negative length field. The negative length value wraps to a large unsigned size_t due to missing signed validation, bypasses an overflow-unsafe pointer arithmetic bounds check in wkb_parse_state_check(), and causes memcpy() in text_from_wkb_state() to operate with a corrupted unbounded length, resulting in a remote denial-of-service condition affecting all sessions on the PostgreSQL instance."
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "datePublic": "2026-09-29T00:00:00.000Z",
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Signed to Unsigned Conversion Error",
              "cweId": "CWE-195",
              "type": "CWE"
            }
          ]
        }
      ],
      "affected": [
        {
          "defaultStatus": "unaffected",
          "vendor": "MobilityDB",
          "product": "MobilityDB",
          "packageURL": "pkg:github/MobilityDB/MobilityDB",
          "repo": "https://github.com/MobilityDB/MobilityDB",
          "versions": [
            {
              "status": "affected",
              "version": "1.1.0",
              "versionType": "semver",
              "lessThanOrEqual": "1.3.0"
            }
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ],
          "cvssV4_0": {
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "exploitMaturity": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "valueDensity": "NOT_DEFINED",
            "vulnerabilityResponseEffort": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "version": "4.0",
            "baseSeverity": "HIGH",
            "baseScore": 7.1,
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
          }
        },
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ],
          "cvssV3_1": {
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "availabilityImpact": "HIGH",
            "version": "3.1",
            "baseSeverity": "MEDIUM",
            "baseScore": 6.5,
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
          }
        }
      ],
      "references": [
        {
          "url": "",
          "name": "",
          "tags": []
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Harsh Raj Singhania",
          "type": "finder"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  }
}