CVE-2026-102489

Undisclosed RCE in Zammad v6.3 and higher

Published Sep 30, 2026 CVSS 4.0 · 9.4 Critical EPSS 49.9% KEV · Listed
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 bug is also present in version 7.0.0 to version 7.1.2, but not exploitable due to changes in the underlying framework.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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. 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 bug is also present in version 7.0.0 to version 7.1.2, but not exploitable due to changes in the underlying framework.
References
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'}

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

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

Type Values Removed Values Added
First Time appeared Zammad
Zammad zammad
Vendors & Products Zammad
Zammad zammad
Type Values Removed Values Added
Weaknesses CWE-284
CWE-613
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
DIVD
Published
Updated
Oct 19, 2026, 9:10 AM
Reserved
Sep 29, 2026, 9:46 AM
Status
Analyzed
Published
Sep 30, 2026, 5:16 PM
Modified
Oct 10, 2026, 4:18 AM