HOMEVULNERABILITIESCVE-2024-1640
MEDIUM

CVE-2024-1640

CWE-639Published: March 13, 2024· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

The Contact Form Builder Plugin: Multi Step Contact Form, Payment Form, Custom Contact Form Plugin by Bit Form plugin for WordPress is vulnerable to unauthorized modification of data due to a insufficient user validation on the bitforms_update_form_entry AJAX action in all versions up to, and including, 2.10.1. This makes it possible for unauthenticated attackers to modify form submissions.

NVD Source

Technical Analysis

CVE-2024-1640 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

bitapps1 product(s)
contact form builder
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.php
PATCHhttps://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.php
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cve
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cve

All References (4)

→
https://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.phpPatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cveThird Party Advisory
→
https://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.phpPatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cveThird Party Advisory

Quick Facts

CVE IDCVE-2024-1640
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-639
CISA KEVNo
Affected1 vendor(s)
PublishedMar 13, 2024

Related CVEs (CWE-639)

CVE-2024-45032
10.0
CVE-2025-40805
10.0
CVE-2026-52782
9.9
CVE-2026-45552
9.9
CVE-2026-34037
9.9
CVE-2025-0987
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-1640 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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