Out-of-Bounds Write Vulnerability in PostGIS Address Standardizer Extension
CVE-2026-73514

8.7HIGH

Key Information:

Vendor

Postgis

Status
Address Standardizer
Vendor
CVE Published:
13 August 2026

Badges

👾 Exploit Exists

What is CVE-2026-73514?

The address_standardizer extension in PostGIS, specifically versions up to 3.7.0, is susceptible to an out-of-bounds write vulnerability. This flaw allows a database user with access to supply user-defined relation names to the function standardize_address(). By providing an oversized classification Type value in a rules table, an attacker can trigger memory corruption through unchecked indexing into an internal output-link table. This exploitation mechanism can lead to severe implications for data integrity and application stability, especially if malicious entries are introduced into the database.

Affected Version(s)

address_standardizer 0

References

https://mehmetince.net/part-1-6-systemic-risks-in-the-man...
technical-descriptionexploit
https://github.com/postgis/address_standardizer/pull/3
issue-tracking
https://github.com/postgis/address_standardizer/pull/4
issue-tracking

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mehmet Ince (@mdisec)
.