CVE-2026-73515

Description

PostGIS before 3.7.0beta2 contains an out-of-bounds read vulnerability that allows attackers to cause memory disclosure or a server crash by supplying a malformed FlatGeobuf buffer. The FlatGeobuf property metadata decoder verifies that a string length field is present but fails to verify that the subsequent string body is contained within the supplied buffer before materializing it into a SQL-visible value, enabling memory disclosure or denial of service.

References

• https://gitea.osgeo.org/postgis/postgis/raw/tag/3.7.0beta2/NEWS
• https://mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-extension-risks-are-real-exploiting-postgis-memory-corruption-bug-at-neondb-supabase-and-many-more/
• https://www.vulncheck.com/advisories/postgis-0beta2-out-of-bounds-read-via-flatgeobuf-buffer