What is CVE-2026-15742?

CVE-2026-15742 is a high-severity vulnerability in Postgresql, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-08-13.

How severe is CVE-2026-15742?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Postgresql

CVE-2026-15742

Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or lev…

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a Postgresql — versions 18, 17, 16

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Frequently asked questions

What is CVE-2026-15742?: CVE-2026-15742 is a high-severity vulnerability in Postgresql, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-08-13.
How severe is CVE-2026-15742?: High severity. CVSS v3 base score is 8.8 out of 10.