CVE-2026-2357Network attack vector

Stored XSS via unescaped shortcode attributes

Published Aug 16, 2026 · Updated Aug 16, 2026

Stored XSS in bt_bb_shortcode in BoldThemes Bold Page Builder through 5.6.8 allows remote authenticated users to execute script in visiting browsers. The bt_bb_shortcode handler renders untrusted shortcode attributes without sufficient input sanitization or output escaping, storing markup that becomes executable JavaScript when a page is rendered. Contributor-level or higher access is required to create or edit the affected content, and the consequence is confined to script execution in browser sessions that render the crafted page.

CVSS severity6.4
Medium
EPSS probability0.18%
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 bt_bb_shortcode in BoldThemes Bold Page Builder through 5.6.8 allows remote authenticated users to execute script in visiting browsers. The bt_bb_shortcode handler renders untrusted shortcode attributes without sufficient input sanitization or output escaping, storing markup that becomes executable JavaScript when a page is rendered. Contributor-level or higher access is required to create or edit the affected content, and the consequence is confined to script execution in browser sessions that render the crafted page.

The record

CVE
CVE-2026-2357
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
BoldThemes
Product
Bold Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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 <=5.6.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BoldThemes · Bold Page Builderversion=0 <=5.6.8

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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