WP Cost Estimation <= 9.642 - Missing Authorization to Arbitrary File Upload/Delete
Published Jan 8, 2026
9.8
CRITICALCVSS 3.1
EPSS 0.68%
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.
Affected products
-
- Version 0StatusaffectedConstraints<9.644
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Loopus | WP Cost Estimation & Payment Forms Builder | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Jan 8, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Jan–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.68% (0.00679) | 50.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.60% (0.00597) | 43.65th | v5 (v2026.06.15) |
| Jan 8, 2026 | 0.21% (0.00207) | 43.18th | v4 (v2025.03.14) |
References (5)
- https://wpscan.com/vulnerability/9219
- https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-wp-cost-estimation-payment-forms-builder-multiple-vulnerabilities-9-642/
- https://www.wordfence.com/blog/2019/02/vulnerabilities-patched-in-wp-cost-estimation-plugin/ exploit
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ae50aa5d-95e3-4650-9dbf-118b4ba3abda?source=cve
- https://www.zdnet.com/article/another-wordpress-commercial-plugin-gets-exploited-in-the-wild/
Change history (0)
No recorded changes yet.