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Critical · 9.1 Known exploited Scanner template Public exploit CVE-2022-23131 EUVD-2022-28222GHSA-4g73-3mxf-j47w

Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML

Published Jan 13, 2022 · Updated Oct 21, 2025 · Assigned by Zabbix

Vendor: Zabbix Product: Frontend

Description

In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default).

Affected products

VendorProductAffectedFixed
Zabbix Frontend 5.4.0 - 5.4.8 —

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 20 repositories · most starred shown

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

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References