CVE-2026-96256Network attack vector

Stored XSS via unescaped Google Map marker content

Published Oct 1, 2026 · Updated Oct 1, 2026

Stored XSS in WPDeveloper Essential Blocks for Gutenberg 6.4.5 and earlier lets remote authenticated users run scripts through Google Map markers. The frontend InfoWindow builder decodes marker title and content values from stored JSON and concatenates them into raw HTML without adequate escaping. Contributor-level access is required to place a malicious marker; the script runs when a visitor opens the affected page.

CVSS severity6.4
Medium
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Stored XSS in WPDeveloper Essential Blocks for Gutenberg 6.4.5 and earlier lets remote authenticated users run scripts through Google Map markers. The frontend InfoWindow builder decodes marker title and content values from stored JSON and concatenates them into raw HTML without adequate escaping. Contributor-level access is required to place a malicious marker; the script runs when a visitor opens the affected page.

The record

CVE
CVE-2026-96256
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
WPDeveloper
Product
Essential Blocks for Gutenberg
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=6.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPDeveloper · Essential Blocks for Gutenbergversion=0 <=6.4.5

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started