Contact Form by Bit Form - Bit Form <= 2.20.3 - Unauthenticated Arbitrary File Upload

Description

The Bit Form builder plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 2.20.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. For this to be exploitable, the PRO version needs to be installed and activated as well. Additionally a form with an advanced file upload element needs to be published.

Scores

EPSS (exploitation in 30 days)

0.88% · top 41% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• CWE-434 Unrestricted Upload of File with Dangerous Type (opens in a new tab)All about CWE-434 and its CVEs

Affected products

• bitpressadmin · Bit Form – Custom Contact Form, Multi Step, Conversational Form & Payment Form builder

  • affected ≤ 2.20.3

References (3)

• https://www.wordfence.com/threat-intel/vulnerabilities/id/6e2e294f-904b-4674-8baf-d3a9a260d634?source=cve (opens in a new tab)
• https://wordpress.org/plugins/bit-form/ (opens in a new tab)
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3343461%40bit-form%2Ftrunk&old=3336733%40bit-form%2Ftrunk&sfp_email=&sfph_mail= (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-6679](https://trackcve.app/badge/CVE-2025-6679.svg)](https://trackcve.app/cve/CVE-2025-6679)

Record last updated 8 Apr 2026, 16:59 UTC.