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.

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Fixes

Solution

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Workaround

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History

Fri, 02 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Docker
Docker docker
Linux
Linux linux Kernel
Weaknesses CWE-384
CPEs cpe:2.3:a:docker:docker:-:*:*:*:*:*:*:*
cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Vendors & Products Docker
Docker docker
Linux
Linux linux Kernel
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-613

Fri, 02 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-10-02T00:00:00+00:00', 'dueDate': '2026-10-05T00:00:00+00:00'}


Wed, 30 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Zammad
Zammad zammad
Vendors & Products Zammad
Zammad zammad

Wed, 30 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-613

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
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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cve-icon MITRE

Status: PUBLISHED

Assigner: DIVD

Published:

Updated: 2026-10-02T19:58:24.036Z

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

Link: CVE-2026-102489

cve-icon Vulnrichment

Updated: 2026-10-01T18:04:16.910Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-30T17:16:40.550

Modified: 2026-10-02T17:55:35.280

Link: CVE-2026-102489

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T18:30:18Z

Weaknesses