Vulnerabilidades do PaperCut PaperCut NG/MF

CVE-2026-87739 Média · 6.9 CWE-639 24/09/2026

PaperCut MF/NG: User permissions are not evaluated on report generation

An improper authentication vulnerability in PaperCut MF/NG allows an unauthenticated, remote attacker to trigger report generation. By submitting report generation requests without valid credentials, an attacker can generate reports and gain unauthorized access to sensitive information.

CVE-2026-82077 Alta · 7.3 CWE-22 24/09/2026

PaperCut NG/MF: Remote Code Execution via Scan2Fax

An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via crafted fax provider settings.

CVE-2026-14780 Alta · 7.5 CWE-94 24/09/2026

PaperCut NG/MF: Remote Code Execution via Scripting Subsystem

A vulnerability exists in the PaperCut NG/MF platform's device-scripting functionality due to insufficient sanitization and access restrictions within the embedded execution engine. An authenticated user with administrative access to the management interface can supply a malicious script that escapes the runtime sandbox. A successful execution enables an attacker to run unauthorized operating system commands with administrative privileges on the host operating system.

CVE-2026-8794 Média · 6.9 CWE-208 03/08/2026

PaperCut NG/MF: User enumeration via timing attack

PaperCut NG/MF contains an observable timing discrepancy in its authentication component. An unauthenticated remote attacker can exploit this vulnerability to perform username enumeration by measuring response times during login attempts. The system executes a password hash comparison only when a valid account is supplied, creating a measurable timing oracle that reveals account existence.

CVE-2026-8793 Média · 6.9 CWE-307 03/08/2026

PaperCut NG/MF: Insufficient brute-force protection

PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An unauthenticated remote attacker can exploit this vulnerability to perform unrestricted brute-force or credential-stuffing attacks without triggering account lockout or rate-limiting mechanisms in some configurations.

CVE-2026-6418 Média · 4.9 CWE-36 05/05/2026

PaperCut NG/MF: Path Traversal in Shared Account Synchronization

An issue was discovered in the Shared Account Synchronization component of PaperCut MF (version 25.0.4). The application allows administrative users to configure a source path for account data synchronization. Due to a lack of proper path validation and sanitization, an authenticated user with administrative privileges can specify arbitrary file paths on the local file system. This allows for the enumeration of directory structures and the unauthorized reading of sensitive text-based configuration or system files. When the synchronization process is triggered, the application attempts to parse the contents of the specified file, subsequently exposing the data within the application's account management interface. This vulnerability could lead to the disclosure of sensitive system information or configuration details, depending on the permissions of the service account under which the application is running.

CVE-2026-6180 Alta · 8.1 CWE-367 05/05/2026

PaperCut MF: Card truncation on HP readers

A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes. This leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.

CVE-2026-5115 Alta · 7.5 CWE-319 30/03/2026

Session hijacking in PaperCut NG/MF embedded application for Konica Minolta devices

The PaperCut NG/MF (specifically, the embedded application for Konica Minolta devices) is vulnerable to session hijacking. The PaperCut NG/MF Embedded application is a software interface that runs directly on the touch screen of a multi-function device. It was internally discovered that the communication channel between the embedded application and the server was insecure, which could leak data including sensitive information that may be used to mount an attack on the device. Such an attack could potentially be used to steal data or to perform a phishing attack on the end user.

CVE-2026-4794 Média · 4.8 CWE-79 30/03/2026

Multiple cross-site scripting (XSS) vulnerabilities in PaperCut NG/MF

Multiple cross-site scripting (XSS) vulnerabilities in PaperCut NG/MF before 25.0.10 allow authenticated administrator users to inject arbitrary web script or HTML code via different UI fields. This could be used to compromise other admininistrator's sessions or perform unauthorized actions via the administrator's authenticated context (e.g. requires an active login session).

CVE-2023-2533 Alta · 8.8 KEV Alta · 56 CWE-352 20/06/2023

PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code. This could be exploited if the target is an admin with a current login session. Exploiting this would typically involve the possibility of deceiving an admin into clicking a specially crafted malicious link, potentially leading to unauthorized changes.