# CVE-2026-18024

## Summary

- **CVE ID:** CVE-2026-18024
- **Severity:** MEDIUM
- **CVSS Score:** 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-126
- **Published:** Aug 13, 2026
- **Last Modified:** Aug 29, 2026

## Description

Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value.  This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

## Affected Products

- n/a — PostgreSQL (18)
- n/a — PostgreSQL (17)
- n/a — PostgreSQL (16)
- n/a — PostgreSQL (15)
- n/a — PostgreSQL (0)

## References

- [CNA](https://www.postgresql.org/support/security/CVE-2026-18024/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 9.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._