---
id: CVE-2026-113352
title: uTox through 0.18.1 Path Traversal via Auto-Accepted File Transfers
summary: >-
  uTox through 0.18.1 contains a path traversal vulnerability that allows Tox
  friends to write arbitrary files by sending absolute or ../ file names to
  victims with auto-accept enabled. Attackers can overwrite shell startup files
  or plant …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-22
vendor: uTox
product: uTox
affected:
  - uTox <= 0.18.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-20T13:43:33.838796Z'
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T13:43:42.347Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113352'
references:
  - url: 'https://github.com/uTox/uTox/issues/1587'
  - url: 'https://github.com/uTox/uTox/pull/1602'
  - url: 'https://github.com/uTox/uTox/pull/1603'
  - url: >-
      https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/xlib/filesys.c#L191-L214
  - url: >-
      https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/file_transfers.c#L249-L290
  - url: 'https://github.com/uTox/uTox'
  - url: >-
      https://www.vulncheck.com/advisories/utox-through-0.18.1-path-traversal-via-auto-accepted-file-transfers
    label: >-
      VulnCheck Advisory: uTox through 0.18.1 Path Traversal via Auto-Accepted
      File Transfers
tags:
  - cve.org
ingestedAt: '2026-10-20T12:05:07.340Z'
---

## Overview

uTox through 0.18.1 contains a path traversal vulnerability that allows Tox friends to write arbitrary files by sending absolute or ../ file names to victims with auto-accept enabled. Attackers can overwrite shell startup files or plant crafted .ftinfo resume records that ft_find_resumeable() loads, abusing FILE pointers to write /proc/self/mem and execute code.

## Affected

- `uTox <= 0.18.1`

## Remediation

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