CVE-2026-84773Network attack vector

Unauthenticated XSS via unescaped CDN image URLs

Published Sep 3, 2026 · Updated Sep 3, 2026

Cross-site scripting in Exactly WWW EWWW Image Optimizer 8.7.6 and earlier allows remote attackers to execute script via CDN image URLs. The plugin emits CDN image URLs into generated page markup without proper output escaping, allowing URL content to be interpreted as executable browser markup. No WordPress account is required, and successful injection can run browser code in the affected site's origin with access to page-visible data and actions.

CVSS severity7.2
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Exactly WWW EWWW Image Optimizer 8.7.6 and earlier allows remote attackers to execute script via CDN image URLs. The plugin emits CDN image URLs into generated page markup without proper output escaping, allowing URL content to be interpreted as executable browser markup. No WordPress account is required, and successful injection can run browser code in the affected site's origin with access to page-visible data and actions.

The record

CVE
CVE-2026-84773
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
Exactly WWW
Product
EWWW Image Optimizer
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=8.7.6 changes=[{"at":"8.7.7","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Exactly WWW · EWWW Image Optimizerversion=n/a <=8.7.6 changes=[{"at":"8.7.7","status":"unaffected"}]

Published CVSS scores

7.2PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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