Vulnerability · Published Oct 14, 2026 · Assigned by Wordfence

CVE-2026-107756Meow Lightbox <= 5.6.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Output Buffering parser noise substitution via comment body + display_name

Medium 6.4

In plain English

A medium-severity cross-site scripting in Meow Lightbox from tigroumeow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.3%top 76.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
tigroumeow	Meow Lightbox	0 – through 5.6.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References