SQL Injection in Library Management System

CVE-2026-18666

The Library Management System WordPress plugin before 3.6.7 does not sanitize and escape a user-supplied parameter before using it in a SQL statement, allowing users with a role as low as Subscriber to perform SQL injection and extract arbitrary data from the database, including user password hashes.

Vulnerability class: SQL Injection

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-18666: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Library Management System — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18666?
CVE-2026-18666 is a medium-severity vulnerability in Library Management System, classified under SQL Injection. CVSS score: 4.3/10. Published 2026-08-10.
How severe is CVE-2026-18666?
Medium severity. CVSS v3 base score is 4.3 out of 10.