What is CVE-2026-107756?

CVE-2026-107756 is a medium-severity vulnerability in Tigroumeow Meow Lightbox, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-10-14.

How severe is CVE-2026-107756?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Tigroumeow Meow Lightbox

CVE-2026-107756

The Meow Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name + comment' parameter in all versions up to, and including, 5.6.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability is only exploitable when the plugin's Output Buffering option is enabled (disabled by default), and requires the attacker to have at least one previously approved comment on the site so that subsequent comments are auto-approved by WordPress core.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

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

Tigroumeow Meow Lightbox

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-107756?: CVE-2026-107756 is a medium-severity vulnerability in Tigroumeow Meow Lightbox, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-10-14.
How severe is CVE-2026-107756?: Medium severity. CVSS v3 base score is 6.4 out of 10.