CVE-2026-102489 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Zammad GmbH

Zammad

unaffected

Version	Status	Constraints
`*`	unknown	< 6.3.0
`6.3.0`	affected	< 6.5.4
`7.0.0`	unaffected	< *

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://csirt.divd.nl/CVE-2026-102489
https://csirt.divd.nl/DIVD-2026-00015

History

Wed, 30 Sep 2026 16:45:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		Undisclosed RCE in Zammad v6.3 and higher
References		https://csirt.divd.nl/CVE-2026-102489 https://csirt.divd.nl/DIVD-2026-00015
Metrics		cvssV4_0 `{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/V:C'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: DIVD

Published: 2026-09-30T16:21:19.937Z

Updated: 2026-09-30T16:21:19.937Z

Reserved: 2026-09-29T09:46:12.490Z

Link: CVE-2026-102489

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

No weakness.

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