CVE-2024-13800: brainstorm force convertplus Missing Authorization
Vulnerability summary
CVE-2024-13800 is a high (CVSS 8.1) Missing Authorization vulnerability in brainstorm force convertplus. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.2% of scored vulnerabilities. Fixed in 3.5.31.
Timeline
- 12-02-2025PublishedVulnerability first disclosed.
- 08-04-2026Last modifiedVulnerability information updated.
Description
The ConvertPlus plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the 'cp_dismiss_notice' AJAX endpoint in all versions up to, and including, 3.5.30. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update option values to '1' on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- wordfenceSource8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
0.00 pp
From 0.47% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Brainstorm force1 product
- convertplus≤ 3.5.30
Convertplug1 product
- convertplus< 3.5.31
Wordpress1 product
- convertplug≤ 3.5.30 (fixed in 3.5.31)
3 vendors · 3 products
References
3 links- www.convertplug.com/plus/product/convertplug/Release Notes