CVE-2026-6173Network attack vector

Stored script execution via unescaped section background image

Published Sep 30, 2026 · Updated Sep 30, 2026

Stored XSS in BoldThemes Bold Page Builder 5.7.2 and earlier lets remote authenticated users inject scripts through section background images. The bt_bb_section shortcode handles the user-supplied background_image attribute without sufficient sanitization or output escaping when rendering a page. Contributor-level content editing is required; the stored script executes in a visitor's browser when the affected page is opened.

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

What happened

Stored XSS in BoldThemes Bold Page Builder 5.7.2 and earlier lets remote authenticated users inject scripts through section background images. The bt_bb_section shortcode handles the user-supplied background_image attribute without sufficient sanitization or output escaping when rendering a page. Contributor-level content editing is required; the stored script executes in a visitor's browser when the affected page is opened.

The record

CVE
CVE-2026-6173
Published
Sep 30, 2026
Updated
Sep 30, 2026
Vendor
BoldThemes
Product
Bold Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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 <=5.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BoldThemes · Bold Page Builderversion=0 <=5.7.2

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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.

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Technologies

Your stack

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Your stack

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