CVE-2026-102639

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2
https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1
https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3g
https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserialization

Configurations

No configuration.

History

29 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 18:17

Updated : 2026-10-02 13:17

NVD link : CVE-2026-102639

Mitre link : CVE-2026-102639

CVE.ORG link : CVE-2026-102639

JSON object : View

Products Affected

No product.

CWE

CWE-195

Signed to Unsigned Conversion Error

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