CVE-2026-73515: PostGIS < 3.7.0beta2 Out-of-Bounds Read via FlatGeobuf Buffer
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
PostGISto a version that resolves this vulnerability.Fixed in 3.7.0beta2
Event History
Frequently Asked Questions
What is the severity of CVE-2026-73515?
CVE-2026-73515 has a high severity score of 8.1.
How do I fix CVE-2026-73515?
To fix CVE-2026-73515, update PostGIS to version 3.7.0beta2 or later.
What type of vulnerability is CVE-2026-73515?
CVE-2026-73515 is an out-of-bounds read vulnerability.
What can attackers achieve with CVE-2026-73515?
Attackers can cause memory disclosure or a server crash by exploiting CVE-2026-73515.
Which software is affected by CVE-2026-73515?
CVE-2026-73515 affects PostGIS versions prior to 3.7.0beta2.