CVE-2026-118784

Description

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 REQUEST_URI against the path of the home URL, so on a plain-permalinks install the author archive URL /?author=<ID> is treated as the home page and the LightImages optimizer runs on it; and (2) LightImages::optimize() calls html_entity_decode() across the entire serialized DOMDocument output under the default-enabled img_processing_entity_decode 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/display_name through the normal profile endpoint and have that markup rehydrated into executing script when any logged-out visitor loads their author archive.

Overview

State: PUBLISHED
Assigner (CNA): Wordfence
CVSS severity: MEDIUM
CVSS score: 6.4 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Effective score: 6.4 / 10 MEDIUM source: CNA overview
CWE(s): CWE-79
Reserved: 2026-10-28
Published: 2026-11-07 09:25 UTC
Last updated: 2026-11-07 18:06 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/118xxx/CVE-2026-118784.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-11-07 10:17:06 UTC
NVD last modified: 2026-11-07 18:17:13 UTC
NVD CVSS v3.1: 6.4 / 10 MEDIUM source: security@wordfence.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Exploitability subscore: 3.1 / 10
Impact subscore: 2.7 / 10
EPSS score: 0.0033 (probability of exploitation in next 30 days)
EPSS percentile: 26.50% vs all CVEs — higher = more likely to be exploited, as of 2026-11-07

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-119035

EUVD enrichment is queued; refresh the page in a few seconds.

Affected products (1)

Vendor	Product	Versions	Platforms
john-dagelmore	WPSpeed – WordPress Speed, Cache & Performance Optimization (Core Web Vitals, PageSpeed 100)	`0` (affected)	—

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://plugins.trac.wordpress.org/browser/wpspeed/tags/2.6.10/src/Core/LightImages.php#L628 security@wordfence.com
https://plugins.trac.wordpress.org/browser/wpspeed/tags/2.6.10/src/Core/Optimize.php#L152 security@wordfence.com
https://plugins.trac.wordpress.org/browser/wpspeed/tags/2.6.10/src/Dispatcher.php#L170 security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3771695/wpspeed/trunk/src/Core/LightImages.php security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/47aa1a74-4189-4521-ba6e-e91a06b8f5a6?source=cve security@wordfence.com

Remediations (10)

CVE Vulnerabilities 2026: Critical Flaws & Fixes Hub

web:cyberupdates365.com

Track critical CVE vulnerabilities 2026 with verified enterprise patch guides. Fix zero-days across VMware, WordPress, Windows, and cloud infrastructure.

2026-11-08 11:44 UTC
Security Advisories and Bulletins | Microsoft Learn

web:learn.microsoft.com

In this library you will find the following security documents that have been released by the Microsoft Security Response Center (MSRC). The MSRC investigates all reports of security vulnerabilities affecting Microsoft products and services, and releases these documents as part of the ongoing effort ...

2026-11-08 11:44 UTC
Cisco Meraki Security Hardening Release: October 2026

web:sec.cloudapps.cisco.com

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching ...

2026-11-08 11:44 UTC
Microsoft Patch Tracker (October 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-11-08 11:44 UTC
SAP Security Patch Day - October 2026

web:support.sap.com

On 13 th of October 2026 , SAP security patch day saw the release of 16 new security notes and 4 GitHub security advisories. There are 2 updates to previously released security notes.

2026-11-08 11:44 UTC
[Security Advisory] September 2026 CVE Advisory Notification

web:support.servicenow.com

What you need to know: On September 24, 2026 , ServiceNow issued CVE - 2026 -86857, CVE - 2026 -86858, CVE - 2026 -13016, CVE - 2026 -86859, and CVE - 2026 -86860. Each of these security issues was identified through internal security testing, customer security assessments, or reports submitted through ServiceNow's responsible disclosure and bug bounty programs and was remediated independently. For security ...

2026-11-08 11:44 UTC
Microsoft Paint CVE-2026-83844: Patching and Hunting

web:threatdefence.com

CVE - 2026 -83844 is a remote code execution flaw in Windows 11 Paint. Microsoft now names 11.2609.401. as the fix . How to check the version, update and hunt.

2026-11-08 11:44 UTC
What Is CVE Remediation in 2026? - aikido.dev

web:www.aikido.dev

CVE remediation is fixing known flaws in the software you run. Why upgrading often fails, what remediation actually involves, and how backporting fixes it.

2026-11-08 11:44 UTC
The 8 Best Automated Vulnerability Remediation Tools in 2026

web:www.openhands.dev

Compare 8 automated vulnerability remediation tools for 2026 on fixes, prioritization, integrations, and deployment control.

2026-11-08 11:44 UTC
CVE-2026-83844: Windows Paint RCE Vulnerability - SentinelOne

web:www.sentinelone.com

CVE - 2026 -83844 is a remote code execution vulnerability in Windows Paint. Learn about its impact, affected versions, and mitigation methods.

2026-11-08 11:44 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-118784.json.

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