CVE-2026-6178Network attack vector

Stored XSS via unescaped icon_box_2 attributes

Published Aug 26, 2026 · Updated Aug 26, 2026

Stored XSS in Muffin Group BeTheme 28.4 and earlier allows remote authenticated users to inject scripts through icon_box_2 attributes. The icon_box_2 shortcode insufficiently sanitizes user-supplied attributes and emits them into page output without adequate escaping. Contributor-level access is required to store the payload, which executes in a visitor's browser whenever the injected page is opened.

CVSS severity6.4
Medium
EPSS probability0.35%
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 Muffin Group BeTheme 28.4 and earlier allows remote authenticated users to inject scripts through icon_box_2 attributes. The icon_box_2 shortcode insufficiently sanitizes user-supplied attributes and emits them into page output without adequate escaping. Contributor-level access is required to store the payload, which executes in a visitor's browser whenever the injected page is opened.

The record

CVE
CVE-2026-6178
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Muffin Group
Product
BeTheme
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <=28.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Muffin Group · BeThemeversion=0 <=28.4

Published CVSS scores

6.4Wordfence CNACVSS: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')
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

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Your stack

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