What’s Vulnerable › Vulnerabilities

CVE-2026-102639: MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-10-02
• Weakness: CWE-195

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.

Affected products

• MobilityDB: from 1.1.0 through 1.1.2; from 1.2.0 before 1.2.2; from 1.3.0 before 1.3.1 — fixed in 1.2.2, 1.3.1

How to fix

Upgrade to a fixed version: MobilityDB 1.2.2, 1.3.1. Check the vendor advisory for mitigations.

References

• 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

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