CVE-2022-23131
Confirmed PUBLISHEDUnsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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).
- CVE Published
- Jan 13, 2022
- Exploitation Reported
- Feb 22, 2022
- CVSS
- 9.1 Critical
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Zabbix |
Frontend
|
5.4.0 - 5.4.8 |
Affected |
| Zabbix |
Frontend
|
5.4.9 to < 5.4.9* |
Unaffected |
CVE References
- support.zabbix.com/browse/ZBX-20350 support.zabbix.com · CVE Record https://support.zabbix.com/browse/ZBX-20350
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-02-22 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-23131.yaml | Apr 25, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitation Status
Exploited in the wild
Recorded 2022-02-22 00:00:00 UTC · CISA
Proof of concept available
Recorded 2022-02-18 03:03:26 UTC · GitHub
Weaknesses (CWE)
-
Authentication Bypass by Spoofing
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-23131.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2024-09-18 15:42:26 UTC · 4 stars
CVE-2022-23131 Zabbix Server SAML authentication exploit
github · Created 2022-07-22 05:48:23 UTC · 8 stars
CVE-2022-23131漏洞批量检测与利用脚本
github · Created 2022-04-02 18:16:56 UTC · 11 stars
CVE-2022-23131漏洞利用工具开箱即用。
github · Created 2022-02-28 10:37:02 UTC · 13 stars
Zabbix - SAML SSO Authentication Bypass
github · Created 2022-02-24 11:34:27 UTC · 2 stars
github · Created 2022-02-18 14:48:53 UTC · 3 stars
github · Created 2022-02-18 03:03:26 UTC · 0 stars
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC about 1 year ago00:00 UTC · about 1 year ago
Nuclei template available
Scanner coverage available
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
03:03 UTC over 4 years ago03:03 UTC · over 4 years ago
Public PoC available
Public proof-of-concept code published
-
15:50 UTC over 4 years ago15:50 UTC · over 4 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2022-23131
{
"cve_id": "CVE-2022-23131",
"title": "Unsafe client-side session storage leading to authentication bypass/instance ...",
"affected_vendor": "Zabbix",
"affected_product": "Frontend",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.1,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}