Description
The Bold Page Builder WordPress plugin before 5.9.8 does not properly validate a link URL before outputting it in an HTML attribute, relying on a filter that can be evaded, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user clicks the affected link.
Published: 2026-09-05
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Stored Cross‑Site Scripting
Action: Apply Patch
AI Analysis

Impact

The vulnerability allows an authenticated user with the Contributor role or higher to insert malicious JavaScript into a link attribute, which executes when a site visitor clicks the link. This stored cross‑site scripting can result in the execution of arbitrary code in the context of other users, enabling cookie theft, phishing, or content tampering. The CVSS score of 6.8 indicates a moderate severity level. The EPSS score of less than 1% suggests a low current probability of exploitation, and the flaw is not listed in the CISA KEV catalog.

Affected Systems

Bold Page Builder plugin for WordPress, versions 5.9.7 and earlier, is affected. Only users with Contributor role or higher who can edit plugin content are at risk. Based on the supplied data, it is inferred that the flaw appears to be confined to the Bold Page Builder plugin itself and does not directly impact other WordPress core components or plugins.

Risk and Exploitability

The vulnerability allows an authenticated user with the Contributor role or higher to insert malicious JavaScript into a link attribute, which executes when a site visitor clicks the link. This stored cross‑site scripting can result in the execution of arbitrary code in the context of other users, enabling cookie theft, phishing, or content tampering. The CVSS score of 6.8 indicates a moderate severity level. The EPSS score of less than 1% suggests a low current probability of exploitation, and the flaw is not listed in the CISA KEV catalog. Based on the description, it is inferred that an attacker does not require advanced network techniques such as VPNs; having edit rights to the WordPress editor is sufficient. The likely exploitation path involves the attacker editing content and then convincing other users to click the malicious link.

Generated by OpenCVE AI on September 6, 2026 at 13:37 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Bold Page Builder to version 5.9.8 or newer.
  • If immediate update is not possible, restrict or remove the Contributor role for users who manage content that includes the affected shortcode features.
  • Implement server‑side sanitization for URL input in the button, headline, and icon shortcodes, ensuring only safe protocols are allowed.

Generated by OpenCVE AI on September 6, 2026 at 13:37 UTC.

Tracking

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Advisories

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History

Sun, 06 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 05 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79

Sat, 05 Sep 2026 06:30:00 +0000

Type Values Removed Values Added
Description The Bold Page Builder WordPress plugin before 5.9.8 does not properly validate a link URL before outputting it in an HTML attribute, relying on a filter that can be evaded, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user clicks the affected link.
Title Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via bt_bb_button/bt_bb_headline/bt_bb_icon URL
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-06T10:38:22.610Z

Reserved: 2026-09-01T01:46:20.094Z

Link: CVE-2026-84021

cve-icon Vulnrichment

Updated: 2026-09-06T10:29:01.942Z

cve-icon NVD

Status : Deferred

Published: 2026-09-05T07:17:13.470

Modified: 2026-09-08T19:09:21.310

Link: CVE-2026-84021

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-06T13:45:07Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')