---
id: CVE-2026-88621
title: >-
  OneNav v1.2.4 contains an authenticated arbitrary file deletion vulnerability
  in the Api::upload() method in class/Api.php
summary: >-
  OneNav v1.2.4 contains an authenticated arbitrary file deletion vulnerability
  in the Api::upload() method in class/Api.php. An authenticated administrator
  can submit a non-HTML upload filename matching an existing file in the
  application…
severity: low
cvss: 2.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-706
published: '2026-09-15'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:00:03.713'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88621'
references:
  - url: 'https://github.com/helloxz/onenav'
    label: cve@mitre.org
  - url: >-
      https://github.com/returnwrong/returnwrong-security-advisories/blob/main/CVE-2026-88621.md
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00308
epssPercentile: 0.21115
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T15:00:39.990691Z'
ingestedAt: '2026-09-15T16:40:03.391Z'
---

## Overview

OneNav v1.2.4 contains an authenticated arbitrary file deletion vulnerability in the Api::upload() method in class/Api.php. An authenticated administrator can submit a non-HTML upload filename matching an existing file in the application's working directory. The application passes the user-controlled filename to unlink() when rejecting the upload, potentially causing file deletion and denial of service.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.