# CVE-2026-111737: Speed Optimizer < 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL Lists


- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 23 Oct 2026
- **Updated:** 23 Oct 2026
- **Also known as:** GHSA-hhfq-xfxp-vh74

## What is CVE-2026-111737?

CVE-2026-111737 is a low-severity vulnerability in Unknown Speed Optimizer, published on 23 Oct 2026. 

### Official description

The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-111737?


## How do I fix CVE-2026-111737?

No fix has been published for CVE-2026-111737 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111737 being exploited?

There is no known exploitation of CVE-2026-111737 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111737 and fix it if it is affected.

What it is: CVE-2026-111737 is a low-severity vulnerability in Unknown Speed Optimizer, published on 23 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-111737 in the wild and no public exploit code.

Affected product: Unknown Speed Optimizer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-111737/ (Markdown: https://insights.sbomify.com/CVE-2026-111737/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111737
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111737
- OSV: https://osv.dev/vulnerability/CVE-2026-111737

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111737/
Summaries are generated and may contain mistakes; the official description above is the record.