7.2

CVE-2026-18978

LiteSpeed Cache <= 7.8.1 - Unauthenticated Stored Cross-Site Scripting via Comment Content

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 7.8.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A comment payload crafted exclusively from decimal numeric character references (e.g. ", <, >) placed inside an allowed element such as <code> bypasses WordPress's wp_kses sanitization, as kses does not treat a data-settings="..." substring within text content as an HTML attribute, allowing the malicious payload to reach the vulnerable function. For this to be exploitable, the site must allow users with previously approved comments to write new comments, and the require_name_email setting must be disabled.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerlitespeedtech
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Produkt LiteSpeed Cache
Default Statusunaffected
Version <= 7.8.1
Version 0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.193
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@wordfence.com 7.2 3.9 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://www.wordfence.com/threat-intel/vulnerabilities/id/0b045f3d-8412-4e35-b369-2b485639274d?source=cve
https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/media.cls.php#L1405
https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/media.cls.php#L1358
https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/media.cls.php#L1317
https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/media.cls.php#L777
https://plugins.trac.wordpress.org/changeset/3635849/litespeed-cache/trunk/src/media.cls.php
https://plugins.trac.wordpress.org/changeset?old_path=%2Flitespeed-cache/tags/7.8.1&new_path=%2Flitespeed-cache/tags/7.9