What is CVE-2026-118165?

CVE-2026-118165 is a medium-severity vulnerability in Firelight Lightbox, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-30.

How severe is CVE-2026-118165?

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

XSS in Firelight Lightbox

CVE-2026-118165

The Firelight Lightbox WordPress plugin before 2.3.23 does not escape the URL of links it opens in its Classic lightbox before inserting it into the page as HTML, which could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks against users who click a crafted link.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-30 · last modified 2026-10-30.

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

EPSS: 0.002 (4.4th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% 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

Firelight Lightbox

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/345e7a47-ba72-4329-a9d6-9d3a9a8b3321/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-118165?: CVE-2026-118165 is a medium-severity vulnerability in Firelight Lightbox, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-30.
How severe is CVE-2026-118165?: Medium severity. CVSS v3 base score is 6.8 out of 10.