CVE-2026-3423Network attack vectorHinoki check available

Stored XSS via unescaped gallery description

Published Aug 28, 2026 · Updated Aug 28, 2026

Stored cross-site scripting in Envira Gallery 1.12.4 and earlier allows remote authenticated users to inject scripts into gallery pages. The REST gallery update path stores the description configuration field without sufficient sanitization, and the shortcode renderer emits it without output escaping. Author-level access is required; injected JavaScript runs for any visitor who opens a page where the gallery description is enabled.

CVSS severity6.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in Envira Gallery 1.12.4 and earlier allows remote authenticated users to inject scripts into gallery pages. The REST gallery update path stores the description configuration field without sufficient sanitization, and the shortcode renderer emits it without output escaping. Author-level access is required; injected JavaScript runs for any visitor who opens a page where the gallery description is enabled.

The record

CVE
CVE-2026-3423
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Awesome Motive
Product
Envira Gallery
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=0 <=1.12.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Awesome Motive · Envira Galleryversion=0 <=1.12.4

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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