# CVE-2022-23131

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).

- Page: https://www.vulneraibility.com/cve/CVE-2022-23131
- CVSS: 9.1
- Known exploited: yes, in CISA KEV since 2022-02-22; CISA due date 2022-03-08
- EPSS: 95.68% (percentile 99.9)
- Unvetted proof-of-concept code on GitHub: 20 GitHub proofs of concept · 1 Nuclei template (first 2022-02-18)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-01-29)
- Weakness: CWE-290
- Published: 2022-01-13

## Affected versions

- Zabbix Frontend: affected 5.4.0 - 5.4.8; fixed in >= 5.4.9 and < 5.4.9*

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://support.zabbix.com/browse/ZBX-20350
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.