CVE-2026-23933Hardcoded session key in Zabbix 7.4
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.
- CVSS
- 7.7 HIGH (v4.0, CNA)CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-259
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Zabbix
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Zabbix Zabbix zabbix:zabbix (from the name) | from 7.4.0 through 7.4.10; fixed at 7.4.11 | CNA record |
zabbix zabbix zabbix:zabbix | from 7.4.0 before 7.4.11 | NVD |
References
- https://support.zabbix.com/browse/ZBX-28071vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.