Rule Document 1:67382

Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Zammad elevation of privilege attempt

Rule Explanation

This rule looks for HTTP requests to the endpoint "/api/v1/packages" that include a multipart body with a "Content-Disposition" header, a target path "app/views/mailer/password_reset/", and a base64‑encoded payload containing the function "write(". Successful exploitation allows an attacker to write arbitrary files to the Zammad application directory, leading to remote code execution with the privileges of the Zammad service account.

What To Look For

This rule fires on elevation of privilege attempts targeting Zammad web application servers.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Adversaries may attempt to take advantage of a weakness in an Internet-facing computer or program using software, data, or commands in order to cause unintended or unanticipated behavior. The weakness in the system can be a bug, a glitch, or a design vulnerability. These applications are often websites, but can include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other applications with Internet accessible open sockets, such as web servers and related services.

MITRE::ATT&CK Framework::Enterprise::Privilege Escalation::Exploitation for Privilege Escalation

Privilege escalation includes techniques that allow an attacker to obtain a higher level of permissions on the mobile device. Attackers may enter the mobile device with very limited privileges and may be required to take advantage of a device weakness to obtain higher privileges necessary to successfully carry out their mission objectives.

Vulnerability::Severity::High

Vulnerability::Severity::Medium

Vulnerability::Severity::Critical

CVE

CVE-2026-102489 CVE-2026-102490

Additional Links

zammad.com/en/advisories/cve-2026-102489-cve-2026-102490

Rule Vulnerability

Escalation of Privilege

An Escalation of Privilege (EOP) attack is any attack method that results in a user or application gaining permissions to access resources they normally would not have access to.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2026-102489

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CVE-2026-102490

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