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Critical · 9.4 Known exploited Public exploit CVE-2026-102489 EUVD-2026-90080GHSA-xmw5-m2wg-4243

Undisclosed RCE in Zammad v6.3 and higher

Published Sep 30, 2026 · Updated Oct 19, 2026 · Assigned by DIVD

Vendor: zammad Product: zammad

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.

Affected products

VendorProductAffectedFixed
Zammad Zammad 6.3.0 – < 6.5.4 6.5.4

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References