Vulnerability · Published Sep 13, 2026 · Assigned by VulnCheck

CVE-2026-90775PostGIS address_standardizer through 3.7.0 Out-of-Bounds Read via Unvalidated Rule Weight

Medium 6.5

In plain English

A medium-severity out-of-bounds read in address_standardizer from PostGIS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.6%top 49.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

PostGIS address_standardizer through 3.7.0 fails to validate the Weight parameter from caller-supplied rules tables before using it as an array index. Attackers can craft malicious rule rows with out-of-range Weight values to trigger out-of-bounds reads in the load_value array, causing the PostgreSQL backend process to crash and terminate all cluster sessions.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	address-standardizer	no fix listed	DEBIAN-CVE-2026-90775
Ubuntu:26.10	address-standardizer	no fix listed	UBUNTU-CVE-2026-90775

Affected products (as reported)

Vendor	Product	Versions
PostGIS	address_standardizer	0 – through 3.7.0

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Unvalidated Weight in rules_add_rule() at v3.7.0 technical-description
Out-of-bounds index into __load_value__ at v3.7.0 technical-description
NEWS.md vendor-advisory
Pull Request #6 issue-tracking, patch
Fix Commit patch
Merge Commit patch
https://github.com/postgis/address_standardizer product
VulnCheck Advisory: PostGIS address_standardizer through 3.7.0 Out-of-Bounds Read via Unvalidated Rule Weight third-party-advisory