Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary rating from Vendor (Wordfence).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'shortcode_content' parameter of the bt_bb_shortcode shortcode in all versions up to, and including, 5.9.6. This is due to a bypassable security filter (bt_bb_save_pre) that can be circumvented via null byte injection, combined with insufficient output sanitization of base64-decoded content in the bt_bb_raw_content shortcode handler. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AnalysisAI
Stored cross-site scripting in the Bold Page Builder plugin for WordPress, affecting all versions up to and including 5.9.6, lets authenticated users with Contributor-level access plant persistent JavaScript that executes in the browser of anyone who views the injected page. The plugin's bt_bb_save_pre filter is bypassable via null-byte injection, and the bt_bb_raw_content shortcode handler outputs base64-decoded content without adequate sanitization, so payloads survive the intended checks. …
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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BoldThemes Bold Pa
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BoldThemes Bold Pa
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in boldthemes Bold Pa
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in boldthemes Bold Pa
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in boldthemes Bold Pa
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BoldThemes Bold Pa
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-80111
GHSA-8q43-cjqx-vmj9