CVE-2026-18024 — PostgreSQL ascii() function reads past end of buffer
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 c…
Published: 2026-08-13 · CVSS: 4.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7