What is CVE-2026-78392?

CVE-2026-78392 is a medium-severity vulnerability in Link Library, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-22.

How severe is CVE-2026-78392?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Link Library

CVE-2026-78392

The Link Library WordPress plugin before 7.9.6 does not sanitise and escape a link field before outputting it inside an attribute of a link preview, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks. The preview is generated without authentication and without checking whether the link has been published, so an unapproved submission is enough to reach any visitor who opens it.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-22 · last modified 2026-10-22.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Link Library

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/35b66d43-c1ce-456b-832b-fb6eda365d93/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-78392?: CVE-2026-78392 is a medium-severity vulnerability in Link Library, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-22.
How severe is CVE-2026-78392?: Medium severity. CVSS v3 base score is 6.8 out of 10.