CVE-2026-102639
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
MobilityDB version 1.3.0 and earlier contains an out-of-bounds read vulnerability in the MEOS binary and library WKB deserialization logic. An unprivileged database user can supply a crafted WKB payload with a negative length field, causing the PostgreSQL backend process to crash.
Risk Assessment
The negative length value wraps to a large unsigned size_t, bypassing bounds checks and causing memcpy to operate with a corrupted unbounded length. This results in a remote denial-of-service condition affecting all sessions on the PostgreSQL instance.
Recommendation
Update MobilityDB to a version that validates the sign of the length field in WKB deserialization. Until patched, restrict access to WKB deserialization functions for untrusted users.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS