{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.1.0"
              },
              {
                "last_affected": "1.1.2"
              },
              {
                "introduced": "1.2.0"
              },
              {
                "fixed": "1.2.2"
              },
              {
                "introduced": "1.3.0"
              },
              {
                "fixed": "1.3.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "e00c69f36a2948c4ad500dd98dfafc17fe46a8d2"
            },
            {
              "introduced": "60048b5b4b7ce2f7560c024d1af024db73b3bd5b"
            },
            {
              "introduced": "8aa274c71a59170381fcf2ddef9d5907f3076e11"
            },
            {
              "fixed": "f02cf5772a7c2f61fa729c29c333da7a45c4709e"
            },
            {
              "fixed": "3bd6609ccf1b8f929e3988d40238c577cb8252a1"
            }
          ],
          "repo": "https://github.com/mobilitydb/mobilitydb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2c92-2w7c-pm3g"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-195"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102639.json"
  },
  "details": "MobilityDB version 1.3.0 and earlier contains an out-of-bounds read vulnerability in the MEOS binary and library 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.",
  "id": "CVE-2026-102639",
  "modified": "2026-10-03T03:30:57.347151938Z",
  "published": "2026-09-29T17:57:36.883Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102639.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102639"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserialization"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MobilityDB/MobilityDB"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization"
}