{"id":"CVE-2026-102639","state":"PUBLISHED","title":"MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization","description":"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.","publishedAt":"2026-09-29T17:57:36.883Z","updatedAt":"2026-10-02T12:19:12.738Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["MobilityDB MobilityDB"],"affected":[{"vendor":"MobilityDB","product":"MobilityDB","packageURL":"pkg:github/MobilityDB/MobilityDB","defaultStatus":"unaffected","versions":[{"version":"1.1.0","status":"affected","lessThanOrEqual":"1.1.2","versionType":"semver"},{"version":"1.2.0","status":"affected","lessThan":"1.2.2","versionType":"semver"},{"version":"1.3.0","status":"affected","lessThan":"1.3.1","versionType":"semver"}],"repo":"https://github.com/MobilityDB/MobilityDB"}],"references":["https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3g","https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1","https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2","https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserialization"],"weaknesses":["CWE-195"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102639.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102639","state":"PUBLISHED","datePublished":"2026-09-29T17:57:36.883Z","dateUpdated":"2026-10-02T12:19:12.738Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-29T15:52:45.482Z"},"containers":{"cna":{"title":"MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"MobilityDB","product":"MobilityDB","packageURL":"pkg:github/MobilityDB/MobilityDB","defaultStatus":"unaffected","versions":[{"version":"1.1.0","status":"affected","lessThanOrEqual":"1.1.2","versionType":"semver"},{"version":"1.2.0","status":"affected","lessThan":"1.2.2","versionType":"semver"},{"version":"1.3.0","status":"affected","lessThan":"1.3.1","versionType":"semver"}],"repo":"https://github.com/MobilityDB/MobilityDB"}],"references":[{"url":"https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3g","name":"Vendor Advisory","tags":["vendor-advisory","technical-description"]},{"url":"https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1","name":"MobilityDB v1.3.1 Patch","tags":["patch"]},{"url":"https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2","name":"MobilityDB v1.2.2 Patch","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserialization","name":"VulnCheck Advisory","tags":["third-party-advisory"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-195","lang":"en","description":"Signed to Unsigned Conversion Error","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-29T17:57:36.883Z"},"tags":["x_open-source"],"datePublic":"2026-09-29T00:00:00.000Z","credits":[{"lang":"en","value":"Harsh Raj Singhania","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-02T12:18:58.862526Z","id":"CVE-2026-102639","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-02T12:19:12.738Z"}}]}}}