CVE-2026-4075Network attack vector

Stored XSS via unescaped shortcode attributes

Published Mar 26, 2026 · Updated Mar 26, 2026

Stored XSS in BlueWindLab BWL Advanced FAQ Manager Lite 1.1.1 and earlier allows remote authenticated users to execute scripts via baf_sbox. The baf_sbox() function interpolates sbox_id, sbox_class, placeholder, highlight_color, highlight_bg, and cont_ext_class directly into HTML attributes without esc_attr() escaping. Contributor-level access is required to save the payload, which runs in the browser of anyone who opens the injected page.

CVSS severity6.4
Medium
EPSS probability0.20%
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 BlueWindLab BWL Advanced FAQ Manager Lite 1.1.1 and earlier allows remote authenticated users to execute scripts via baf_sbox. The baf_sbox() function interpolates sbox_id, sbox_class, placeholder, highlight_color, highlight_bg, and cont_ext_class directly into HTML attributes without esc_attr() escaping. Contributor-level access is required to save the payload, which runs in the browser of anyone who opens the injected page.

The record

CVE
CVE-2026-4075
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
BlueWindLab
Product
BWL Advanced FAQ Manager Lite
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 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=* <=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BlueWindLab · BWL Advanced FAQ Manager Liteversion=* <=1.1.1

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')
T1059.007Command and Scripting Interpreter: JavaScript

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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