CVE-2026-15742
High
Description
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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Postgresql
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- postgresql postgresql14.24, 15.19, 16.15, 17.11, 18.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| postgresql postgresql | 14.0 ≤ v < 14.24, 15.0 ≤ v < 15.19, 16.0 ≤ v < 16.15, 17.0 ≤ v < 17.11, 18.0 ≤ v < 18.5 | 14.24, 15.19, 16.15, 17.11, 18.5 |
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