Out-of-bounds Read in Postgis Address Standardizer
CVE-2026-90775
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/postgis/address_standardizer/blob/v3.7.0/src/gamma.c (technical-description)
- github.com/postgis/address_standardizer/blob/v3.7.0/src/analyze.c (technical-description)
- github.com/postgis/address_standardizer/blob/e987949e0fccff6a0e7a6d3f86814d5c7a… (vendor-advisory)
- github.com/postgis/address_standardizer/pull/6 (issue-tracking, patch)
- github.com/postgis/address_standardizer/commit/a5cb4b1360a040973092f13b1af97a71… (patch)
- github.com/postgis/address_standardizer/commit/e987949e0fccff6a0e7a6d3f86814d5c… (patch)
- github.com/postgis/address_standardizer (product)
- www.vulncheck.com/advisories/postgis-address-standardizer-through-3.7.0-out-of-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90775?
- CVE-2026-90775 is a medium-severity vulnerability in Postgis Address Standardizer, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-09-13.
- How severe is CVE-2026-90775?
- Medium severity. CVSS v3 base score is 6.5 out of 10.