CVE-2026-4766Public exploitNetwork attack vector

Stored XSS via unescaped gallery shortcode metadata

Published Mar 25, 2026 · Updated Mar 25, 2026

Stored XSS in DevriX Easy Image Gallery 1.5.3 and earlier allows remote authenticated users to inject scripts through gallery metadata. The Gallery shortcode path accepts a user-controlled gallery ID from post meta without sanitizing it and emits the value into lightbox HTML attributes without output escaping. Contributor-level access is sufficient; the stored script runs in the browser of anyone viewing the affected page and can act within that viewer's WordPress session.

CVSS severity6.4
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in DevriX Easy Image Gallery 1.5.3 and earlier allows remote authenticated users to inject scripts through gallery metadata. The Gallery shortcode path accepts a user-controlled gallery ID from post meta without sanitizing it and emits the value into lightbox HTML attributes without output escaping. Contributor-level access is sufficient; the stored script runs in the browser of anyone viewing the affected page and can act within that viewer's WordPress session.

The record

CVE
CVE-2026-4766
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
DevriX
Product
Easy Image Gallery
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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=* <=1.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

DevriX · Easy Image Galleryversion=* <=1.5.3

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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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