Out-of-bounds Read in Postgis
CVE-2026-73515
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Postgis — versions 0
Weakness classification (CWE)
References
- mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-exten… (technical-description, exploit)
- gitea.osgeo.org/postgis/postgis/raw/tag/3.7.0beta2/NEWS (release-notes)
- www.vulncheck.com/advisories/postgis-0beta2-out-of-bounds-read-via-flatgeobuf-b… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73515?
- CVE-2026-73515 is a high-severity vulnerability in Postgis, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-08-13.
- How severe is CVE-2026-73515?
- High severity. CVSS v3 base score is 8.1 out of 10.