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CVE-2026-23933

Status: AnalyzedHigh (7.7)—

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

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Acceso red adyacente (AV:A) a clave criptográfica expuesta en BD permite forjar cookies de sesión (T1078.001) en Zabbix con SAML+guests; manipulación de autenticación (T1556.002) secundaria.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementPassword PoliciesOperating System ConfigurationNetwork Segmentation

Affected technologies (1)

Zabbix — Zabbix

CWEs

References

Raw JSON (NVD)

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