Description
The WP Cost Estimation plugin for WordPress is vulnerable to arbitrary file uploads and deletion due to missing file type validation in the lfb_upload_form and lfb_removeFile AJAX actions in versions up to, and including, 9.642. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible. Additionally, the attacker can also delete files on the server such as database configuration files, subsequently uploading their own database files.
References (5)
Core 5
Core References
Various Sources
https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-wp-cost-estimation-payment-forms-builder-multiple-vulnerabilities-9-642/
Various Sources
https://www.zdnet.com/article/another-wordpress-commercial-plugin-gets-exploited-in-the-wild/
Third Party Advisory
https://www.wordfence.com/blog/2019/02/vulnerabilities-patched-in-wp-cost-estimation-plugin/
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/ae50aa5d-95e3-4650-9dbf-118b4ba3abda?source=cve
Third Party Advisory
https://wpscan.com/vulnerability/9219
Scores
CVSS v3
9.8
EPSS
0.0031
EPSS Percentile
54.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
VulnCheck KEV
2019-02-13
CWE
CWE-434
Status
published
Products (1)
loopus/WP Cost Estimation & Payment Forms Builder
< 9.644
Published
Jan 08, 2026
Tracked Since
Feb 18, 2026