CVE-2026-73515

Name	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1144647

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
postgis (PTS)	bookworm	3.3.2+dfsg-1	vulnerable
	trixie	3.5.2+dfsg-1	vulnerable
	forky, sid	3.6.4+dfsg-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
postgis	source	(unstable)	(unfixed)			1144647

Notes

[trixie] - postgis <no-dsa> (Minor issue)
[bookworm] - postgis <postponed> (Minor issue)
https://gitea.osgeo.org/postgis/postgis/pulls/669
https://gitea.osgeo.org/postgis/postgis/commit/767fa40644253281f6d4e8b06811489b0a0f9b0d (stable-3.6)
https://gitea.osgeo.org/postgis/postgis/commit/d2b5298d8b82ec1a4a667594422e9670b6dbd7e1 (stable-3.5)
https://gitea.osgeo.org/postgis/postgis/commit/ac21354f3385fda37932968668c15b6d4084201a (stable-3.4)