CVE-2026-9134Network attack vector

Contributor-level stored XSS via unescaped attribute keys

Published Jun 13, 2026 · Updated Jun 13, 2026

Stored cross-site scripting in FooPlugins FooGallery 3.1.31 and earlier allows remote authenticated users to inject scripts via a shortcode. The foogallery_sanitize_javascript() blacklist permits event attributes such as onmouseenter, and foogallery_build_container_attributes_safe() emits the attacker-controlled attribute key without escaping it. Contributor-level access is required; the injected script executes in any browser that renders the affected gallery page.

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

What happened

Stored cross-site scripting in FooPlugins FooGallery 3.1.31 and earlier allows remote authenticated users to inject scripts via a shortcode. The foogallery_sanitize_javascript() blacklist permits event attributes such as onmouseenter, and foogallery_build_container_attributes_safe() emits the attacker-controlled attribute key without escaping it. Contributor-level access is required; the injected script executes in any browser that renders the affected gallery page.

The record

CVE
CVE-2026-9134
Published
Jun 13, 2026
Updated
Jun 13, 2026
Vendor
FooPlugins
Product
FooGallery
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 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 <=3.1.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FooPlugins · FooGalleryversion=0 <=3.1.31

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 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 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.

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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