Paper/Archive/CVE-2026-23933

CVE-2026-23933

Zabbix Zabbix — Hardcoded session key in Zabbix 7.4

CVSS 9.1 (NVD)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 47.4.474 × 209.5 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Zabbix7.4.0 – 7.4.10–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Zabbix (CNA)7.7CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refsupport.zabbix.com/browse/ZBX-28071