Appsecure logo

CVE-2024-2771: Critical Vulnerability in Fluent Forms Contact Form Plugin

CVE-2024-2771 is a critical privilege escalation vulnerability in the Fluent Forms Contact Form Plugin for WordPress. Attackers can exploit this flaw to grant unauthorized management permissions and delete accounts. Immediate patching is essential.

CRITICALPublic ExploitCVSS 9.8 · Published May 18, 2024

Not a customer? See how AppSecure simulates real world attacks to protect your infrastructure.

Speak to Experts

CVE-2024-2771 is a critical vulnerability affecting the Fluent Forms Contact Form Plugin for WordPress. This vulnerability allows unauthorized access due to a missing capability check on the /wp-json/fluentform/v1/managers REST API endpoint, allowing unauthenticated attackers to grant themselves management permissions. They can access all settings and features of the plugin and have the capability to delete manager accounts. With a CVSS score of 9.8, this is classified as a critical vulnerability, underscoring the urgency for organizations to address it.

The risk to organizations includes potential unauthorized access to sensitive data and the ability to manipulate or remove existing management accounts. The fact that this vulnerability is exploitable without any authentication makes it particularly severe. Organizations using affected versions should prioritize patching this vulnerability immediately to mitigate risks.

Given the nature of this vulnerability and the potential impact, organizations must assess their exposure and apply the necessary updates to ensure security. The urgency for defenders cannot be overstated, as failure to patch could result in significant security breaches.

As of now, there is no public exploit confirmed, but there is a Proof-of-Concept available on GitHub, indicating that the vulnerability could be actively targeted. Organizations should remain vigilant against potential exploitation attempts.

Vulnerability Details

The vulnerability description indicates that the Contact Form Plugin by Fluent Forms is susceptible to privilege escalation due to a lack of capability checks. The CVSS score of 9.8 categorizes it as critical, highlighting the significant risk it poses. Affected versions include all versions up to and including 5.1.16, necessitating immediate action for those utilizing this plugin.

The vulnerability type is categorized under CWE-862, which addresses issues of missing capability checks. Organizations must be aware of the implications of this vulnerability and take steps to remediate it.

Technical Analysis

The root cause of this vulnerability lies in the absence of necessary checks on the REST API endpoint, which is accessible without authentication. The attack vector is through network access, and the attack complexity is rated as low, as no special conditions or interactions are required from the user. The privileges required for exploitation are none, meaning any unauthenticated user can take advantage of this flaw.

The impact of this vulnerability is significant: it can affect confidentiality, integrity, and availability, all rated as high. Attackers may leverage this vulnerability to access sensitive plugin configurations, modify settings, or delete important management accounts, further compromising the application's functionality.

Risk & Impact Analysis

The deployment risk associated with this vulnerability is high. Organizations using the affected plugin versions are at significant risk of unauthorized access and potential data loss. The blast radius is considerable, as attackers can exploit this vulnerability to affect all users of the plugin.

The urgency for remediation is critical as indicated by the CVSS score of 9.8, which necessitates immediate patching. As the vulnerability is widely exploitable, organizations must act swiftly to safeguard their systems and data.

Organizations should regularly review their deployment of plugins and implement monitoring systems to detect any unauthorized access attempts. This vulnerability serves as a reminder of the importance of secure coding practices and thorough testing before deploying software.

Exploitation Status

Signal

Status

Known Exploit

Yes

Public PoC

Yes

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions prior to vendor patch, specifically up to and including 5.1.16 of the Fluent Forms Contact Form Plugin are affected. Organizations must ensure they are running the latest version to mitigate this vulnerability.

Mitigation & Remediation

Organizations should prioritize patching immediately by updating to the latest version of the Fluent Forms Contact Form Plugin. If a patch is not available, consider implementing workarounds such as disabling the plugin until a fix can be applied.

For those utilizing WordPress for their applications, implementing configuration hardening and network controls can help limit exposure. Continuous monitoring for unusual activity related to this vulnerability is also recommended.

Organizations can validate remediation through continuous penetration testing to identify similar weaknesses.

Detection Guidance

Monitoring log indicators for unauthorized access attempts to the REST API endpoint is critical. Behavioral anomalies, such as unexpected changes in user roles or permissions, should be flagged for further investigation.

Additionally, implementing network signatures to detect exploitation attempts can provide an added layer of security. Organizations should maintain vigilant monitoring of changes within the plugin's management settings.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2024-2771 lies in the critical nature of privilege escalation vulnerabilities in widely used plugins. This incident highlights a common trend where inadequate capability checks lead to severe security risks.

Security teams should take lessons from this vulnerability to strengthen their defensive measures, particularly around plugin management and access controls. Regular audits of plugins and their configurations can significantly reduce potential exposure.

Organizations are encouraged to adopt a proactive approach towards vulnerability management. Engaging in vulnerability management programs can assist in identifying and mitigating similar threats effectively.

Additionally, organizations should consider leveraging penetration testing methodologies to thoroughly evaluate their security posture against similar vulnerabilities.

Finally, organizations should stay informed on trends in vulnerabilities and exploits through continuous learning and adaptation.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

Latest CVEs. Recently published vulnerabilities from the NVD database.

View all vulnerabilities
CVE IDSeverity
CVE-2025-65418HIGH
CVE-2025-65417MEDIUM
CVE-2025-65416MEDIUM
CVE-2025-65415MEDIUM
CVE-2025-61314HIGH

Protect Your Business with Hacker-Focused Approach.