CVE-2026-113500

LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via Font Display Optimization

The LiteSpeed Cache WordPress plugin before 7.9.2 does not limit one of its HTML optimization routines to stylesheet content, so it can delete the markup that closes an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comments are published to inject event-handler attributes that run JavaScript in the browser of any visitor, including a logged-in administrator, viewing front-end pages while the optimization is enabled.

Affected

LiteSpeed Cache

CVSS v3.1 CNA

7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.30% chance of exploitation in the next 30 days, 23rd percentile

Published

2026-10-23

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/f841e09f-275c-4c10-a5b7-af294f92db29/snapshot

CVE references

• https://wpscan.com/vulnerability/f841e09f-275c-4c10-a5b7-af294f92db29REFERENCE

References

• CVE Record
• NVD entry