vulnerabilityCVE-2026-102489

Undisclosed RCE in Zammad v6.3 and higher

Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user. The vulnerability is also present in version 7.0.0 to version 7.1.3, but not exploitable due to environment conditions.

Severity

8.7High

Exploitation evidence

Has exploited

Remediation

Fixed in 6.5.4

Affected software

Software	Affected versions	Fixed in	Sources

CVSS (Common Vulnerability Scoring System)

Preferred assessment

Vector

Attack vector

Attack complexity

Privileges required

User interaction

Scope

Confidentiality impact

Integrity impact

Availability impact

Source assessments

EPSS (Exploit Prediction Scoring System)

Probability

Percentile

Model

Preferred remediation

Action