What is CVE-2026-78393?

CVE-2026-78393 is a medium-severity vulnerability in Link Library, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-25.

How severe is CVE-2026-78393?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Link Library

CVE-2026-78393

The Link Library WordPress plugin before 7.9.6 does not properly escape some parameters before outputting them in the addresses of links it generates on its front-end directory pages, leading to Reflected Cross-Site Scripting which could be used against any visitor, including logged-in administrators.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-25 · last modified 2026-09-25.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (3.6th percentile), scored 2026-09-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Link Library

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/2605888a-195d-4bce-8aac-347710ad1de8/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-78393?: CVE-2026-78393 is a medium-severity vulnerability in Link Library, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-25.
How severe is CVE-2026-78393?: Medium severity. CVSS v3 base score is 6.1 out of 10.