CVE-2026-102489
CRITICALCISA KEVDescription
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.
How to fix
Actively exploited, no published fix found yet
Federal remediation due: 2026-10-05
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 69% of all known CVEs.
Remediation due: 2026-10-05
References
Related Vulnerabilities
Other CWE-384 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-11714 | Critical | 9.8 | 68% | - | - |
| CVE-2018-18925 | Critical | 9.8 | 31% | - | - |
| CVE-2019-12258 | High | 7.5 | 23% | - | Fix |
| CVE-2018-17199 | High | 7.5 | 20% | - | Fix |
| CVE-2019-10008 | High | 8.8 | 19% | - | - |
| CVE-2024-50339 | Medium | 5.3 | 19% | - | Fix |
Common questions
How do I fix CVE-2026-102489?
No published fix for CVE-2026-102489 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2026-10-05. Apply the vendor's mitigations per CISA's guidance.
Is CVE-2026-102489 being actively exploited?
Yes. CVE-2026-102489 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-10-05. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2026-102489?
CVE-2026-102489 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-10.