CVE-2014-2659 in Papercut MF
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in the admin UI in Papercut MF and NG before 14.1 (Build 26983) allows remote attackers to hijack the authentication of administrators via unspecified vectors.
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Analysis
by VulDB Data Team • 05/11/2026
The CVE-2014-2659 vulnerability represents a critical cross-site request forgery flaw within the administrative user interface of Papercut MF and NG email server software. This vulnerability exists in versions prior to 14.1 build 26983 and specifically targets the administrative web interface components that handle authentication and authorization processes. The flaw enables remote attackers to manipulate administrative sessions through unspecified attack vectors that exploit the lack of proper CSRF protection mechanisms in the application's administrative functions.
The technical implementation of this vulnerability stems from insufficient validation of request origins and the absence of anti-CSRF tokens in administrative operations. When administrators interact with the web-based administrative interface, the application fails to properly verify that requests originate from legitimate administrative sessions rather than maliciously crafted requests from external domains. This weakness allows attackers to construct specially crafted web pages or emails that, when visited by an authenticated administrator, automatically submit administrative commands without the user's knowledge or consent. The vulnerability is particularly dangerous because it targets administrative functions, which typically possess elevated privileges and can perform critical system modifications.
The operational impact of this vulnerability extends beyond simple data theft or modification. Attackers who successfully exploit this CSRF flaw can gain unauthorized administrative access to Papercut email servers, potentially leading to complete system compromise. Administrative privileges granted through this vulnerability could enable attackers to modify email configurations, create or delete user accounts, access sensitive email communications, alter system settings, and potentially establish persistent backdoors. The remote nature of the attack means that threat actors do not require physical access to the network or administrative credentials, making the vulnerability particularly concerning for organizations that rely on Papercut for email services.
Organizations affected by this vulnerability should immediately implement several mitigation strategies to protect their administrative interfaces. The primary recommendation involves applying the vendor-provided security patches that address this specific CSRF weakness in Papercut MF and NG versions 14.1 and later. Additionally, implementing proper anti-CSRF token mechanisms in web applications, enforcing strict referer header validation, and utilizing same-site cookies can significantly reduce the attack surface. Network segmentation and access controls should be reinforced to limit administrative interface exposure, while security monitoring should be enhanced to detect suspicious administrative activities. This vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery vulnerabilities, and represents a technique commonly categorized under ATT&CK tactic TA0001 (Initial Access) and technique T1190 (Exploit Public-Facing Application) in the MITRE ATT&CK framework, demonstrating how web application flaws can provide attackers with elevated privileges and persistent access to enterprise systems.