CVE-2026-15742

EUVD-2026-57847
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 levenshtein_less_equal().  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
postgresql-13
bullseye
vulnerable
bullseye (security)
vulnerable
postgresql-15
bookworm
vulnerable
bookworm (security)
vulnerable
postgresql-17
trixie
vulnerable
trixie (security)
17.11-0+deb13u1
fixed
postgresql-18
forky
vulnerable
sid
vulnerable
Common Weakness Enumeration
References
https://www.postgresql.org/support/security/CVE-2026-15742/