What is CVE-2026-18024?

CVE-2026-18024 is a medium-severity vulnerability in Postgresql, classified under Buffer Over-read. CVSS score: 4.3/10. Published 2026-08-13.

How severe is CVE-2026-18024?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Postgresql

CVE-2026-18024

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…

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

N/a Postgresql — versions 18, 17, 16

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

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Frequently asked questions

What is CVE-2026-18024?: CVE-2026-18024 is a medium-severity vulnerability in Postgresql, classified under Buffer Over-read. CVSS score: 4.3/10. Published 2026-08-13.
How severe is CVE-2026-18024?: Medium severity. CVSS v3 base score is 4.3 out of 10.