CVE-2026-73514
PostGIS address_standardizer Out-of-Bounds Write via standardize_address()
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| address_standardizer PostGIS postgis/address_standardizer
github |
≥ 0; < 423570b0dbf6cd9f6fc36de28a636e7b6e9aa8aa (affected, git)
Other versions: affected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 8.8 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA: VulnCheck |
Exploit evidence
References
- https://mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-extension-risks-are-real-exploiting-postgis-memory-corruption-bug-at-neondb-supabase-and-many-more/CNA: VulnCheck · technical-description, exploit
- https://github.com/postgis/address_standardizer/pull/3CNA: VulnCheck · issue-tracking, patch
- https://github.com/postgis/address_standardizer/pull/4CNA: VulnCheck · issue-tracking, patch
- https://github.com/postgis/address_standardizer/commit/423570b0dbf6cd9f6fc36de28a636e7b6e9aa8aaCNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/postgis-address-standardizer-out-of-bounds-write-via-standardize-addressCNA: VulnCheck · third-party-advisory
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