Hi,

The following vulnerability was published for postgis.

CVE-2026-73515[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-73515
https://www.cve.org/CVERecord?id=CVE-2026-73515
[1] https://gitea.osgeo.org/postgis/postgis/pulls/669
[2] https://gitea.osgeo.org/postgis/postgis/commit/767fa40644253281f6d4e8b06811489b0a0f9b0d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

It's already fixed in experimental.

The issue doesn't seem severe enough that we need to cherry-pick the patch for 3.6 in unstable and can just wait for the final 3.7 release.

I you do intend to issue a DSA, we'll need to prepare an update for 3.5 in trixie too.

Kind Regards,

Bas