CVE-2022-23131 (GCVE-0-2022-23131)

Vulnerability from cvelistv5 – Published: 2022-01-13 15:50 – Updated: 2025-10-21 23:15
VLAI CISA Shadowserver Previdian
Title
Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML
Summary
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).
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 17:20 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
Zabbix CNA under the mitre root
CNA scorecard B 79/100 over 20 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Zabbix Frontend Affected: 5.4.0 - 5.4.8
Unaffected: 5.4.9 , < 5.4.9* (custom)
guessed Create a notification for this product.
Date Public
2021-11-22 00:00
Credits
Zabbix wants to thank Thomas Chauchefoin from SonarSource for reporting this issue to us
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 409fdcb9-f307-44c8-b115-25cefcfcb1e5

Vulnerability ID: CVE-2022-23131

Status: Confirmed

Status Updated: 2022-02-22 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-02-22
Asserted: 2022-02-22
Scope
Notes: KEV entry: Zabbix Frontend Authentication Bypass Vulnerability | Affected: Zabbix / Frontend | Description: Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML. | Required action: Apply updates per vendor instructions. | Due date: 2022-03-08 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2022-23131
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-290
Feed CISA Known Exploited Vulnerabilities Catalog
Product Frontend
Due Date 2022-03-08
Date Added 2022-02-22
Vendorproject Zabbix
Vulnerabilityname Zabbix Frontend Authentication Bypass Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:25 UTC | Updated: 2026-02-06 07:53 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 8951f630-379d-44c5-a3ac-f87643e74ca8

Vulnerability ID: CVE-2022-23131

Status: Confirmed

Status Updated: 2026-10-18 00:00 UTC

Exploited: Yes

Characteristics
Severity: 91.0
Timestamps
First Seen: 2026-09-21
Asserted: 2026-09-21
Last Seen: 2026-10-18
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Zabbix / Zabbix | Class: other-software | Severity: Critical (CVSS 9.1) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-10-18: 4
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Zabbix
30D Avg 0
90D Avg 0
Product Zabbix
Cisa Kev yes
Connections 4
Observation Date 2026-10-18
Vulnerability Class CVSS
Vulnerability Score 9.1
Vulnerability Severity Critical
References
Created: 2026-10-21 09:13 UTC | Updated: 2026-10-21 09:13 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c0521bcc-b8de-4caa-9bed-b318b168df9b

Vulnerability ID: CVE-2022-23131

Status: Confirmed

Status Updated: 2022-02-22 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-02-22
Asserted: 2022-02-22
Scope
Notes: KEVIntel entry: Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML | Affected: Zabbix / Frontend | CVSS: 9.1 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML
Vendor Zabbix
Product Frontend
Added Date 2022-02-22T00:00:00.000Z
Cvss Score 9.1
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
Show details on NVD website
To clipboard 

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}



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