CVEvulnerability
CVE-2026-3129
6.4 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-08-28
- Last modified
- 2026-08-29
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
Description
The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via crafted `<img>` tag attributes in all versions up to, and including, 7.7. This is due to a flawed regular expression that is used to strip `width` and `height` attributes from images when the "Lazy Load Images" and "Add Missing Sizes" features are enabled. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://blog.litespeedtech.com/2026/08/27/security-update-for-lscwp-cve-2026-3129/ blog.litespeedtech.com
- https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/media.cls.php#L761 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/changeset/3473912/ plugins.trac.wordpress.org
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c107674d-173f-49cf-b329-e7bffaee841d?source=cve www.wordfence.com