Buffer overflow in Postgis Address Standardizer
CVE-2026-73514
The address_standardizer extension for PostGIS through 3.7.0, fixed in commit 423570b, contains an out-of-bounds write vulnerability that allows a database user with the ability to supply caller-controlled relation names to standardize_address() to trigger memory corruption by providing a rules table with a classification Type value exceeding the fixed class range. Attackers can craft a malicious rules table entry with an oversized rule type value that is used without bounds checking as an index into an internal output-link table, resulting in an out-of-bounds write.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% 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: 0.008 · change: +0.004
Affected products
- Postgis Address Standardizer — versions 0
Weakness classification (CWE)
References
- mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-exten… (technical-description, exploit)
- github.com/postgis/address_standardizer/pull/3 (issue-tracking)
- github.com/postgis/address_standardizer/pull/4 (issue-tracking, patch)
- github.com/postgis/address_standardizer/commit/423570b0dbf6cd9f6fc36de28a636e7b… (patch)
- www.vulncheck.com/advisories/postgis-address-standardizer-out-of-bounds-write-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73514?
- CVE-2026-73514 is a high-severity vulnerability in Postgis Address Standardizer, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-08-13.
- How severe is CVE-2026-73514?
- High severity. CVSS v3 base score is 8.8 out of 10.