Is there a public exploit for CVE-2026-118784?

No public exploit for CVE-2026-118784 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-118784?

CVE-2026-118784 scores CVSS 6.4 (v3.1), rated medium.

What does CVE-2026-118784 affect?

CVE-2026-118784 affects john-dagelmore WPSpeed – WordPress Speed, Cache & Performance Optimization (Core Web Vitals, PageSpeed 100).

6.4 Medium

The WPSpeed plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.10 This is due to a…

CVE-2026-118784

The WPSpeed plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.10 This is due to a combination of two issues in the LightImages HTML optimizer: (1) Dispatcher::runOptimize() decides whether the current request is the site's home page by comparing only the URL path from REQUESTURI against the path of the home URL, so on a plain-permalinks install the author archive URL /?author= is treated as the home page and the LightImages optimizer runs on it; and (2) LightImages::optimize() calls htmlentitydecode() across the entire serialized DOMDocument output under the default-enabled imgprocessingentitydecode setting, converting any entity-encoded markup present as plain text in the page (including WordPress's rendered author title) into live HTML. This makes it possible for authenticated attackers, with Subscriber-level access and above, to store entity-encoded markup in their own nickname/displayname through the normal profile endpoint and have that markup rehydrated into executing script when any logged-out visitor loads their author archive.

Assessment

CVSS: 6.4 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 7 November 2026
Last updated: 7 November 2026
Affected: john-dagelmore · WPSpeed – WordPress Speed, Cache & Performance Optimization (Core Web Vitals, PageSpeed 100)
Assigner: Wordfence

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

At the source

EUVD (ENISA)

References

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