# CVE-2026-90691

## Summary

- **CVE ID:** CVE-2026-90691
- **Severity:** MEDIUM
- **CVSS Score:** 8.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P)
- **CWE:** CWE-22
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

A security vulnerability has been detected in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The impacted element is the function FileOperationsManager of the file hexstrike_server.py of the component API Files Endpoint. The manipulation of the argument filename leads to path traversal. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Affected Products

- 0x4m4 — HexStrike AI (d689933ff579d839c676c82b231f8e98326c5f04)

## References

- [CNA](https://vuldb.com/vuln/403224)
- [CNA](https://vuldb.com/vuln/403224/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90691)
- [CNA](https://vuldb.com/submit/914893)
- [CNA](https://github.com/0x4m4/hexstrike-ai/issues/225)
- [CNA](https://github.com/0x4m4/hexstrike-ai/pull/159)
- [CNA](https://github.com/0x4m4/hexstrike-ai/issues/135)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._