WordPress Plugin Vulnerabilities

LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via CDN Inline CSS Rewriting

Description

The plugin does not restrict one of its HTML rewriting routines to stylesheet content, so it removes a quote that terminates an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comment is published to inject attributes that execute JavaScript in the browser of any visitor, including a logged-in administrator, who views front-end pages while the affected option is enabled.

Proof of Concept

Affects Plugins

Fixed in 7.9.2

References

Classification

Type
XSS
CWE
CVSS

Miscellaneous

Original Researcher
Jakub Herman
Submitter
Jakub Herman
Submitter website
Verified
Yes

Timeline

Publicly Published
2026-10-21 (about 2 days ago)
Added
2026-10-21 (about 1 day ago)
Last Updated
2026-10-22 (about 8 hours ago)

Other