CVE-2026-18024 — PostgreSQL ascii() function reads past end of buffer

CVE-2026-18024

PostgreSQL ascii() function reads past end of buffer PUBLISHED

Description (CNA)

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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected (CNA)

Vendor / product	Versions
n/a / PostgreSQL	affected 18 before 18.6; affected 17 before 17.11; affected 16 before 16.15; affected 15 before 15.19; affected 0 before 14.24

CWE

CWE-126

References

https://www.postgresql.org/support/security/CVE-2026-18024/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.