Vulnerability · Published Oct 20, 2026 · Assigned by VulnCheck
CVE-2026-113352uTox through 0.18.1 Path Traversal via Auto-Accepted File Transfers
High 7.5
In plain English
A high-severity path traversal in uTox from uTox. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 51.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | utox | no fix listed | DEBIAN-CVE-2026-113352 |
| Debian:14 | utox | no fix listed | DEBIAN-CVE-2026-113352 |
| Ubuntu:22.04:LTS | utox | no fix listed | UBUNTU-CVE-2026-113352 |
| Ubuntu:24.04:LTS | utox | no fix listed | UBUNTU-CVE-2026-113352 |
| Ubuntu:26.04:LTS | utox | no fix listed | UBUNTU-CVE-2026-113352 |
| Ubuntu:26.10 | utox | no fix listed | UBUNTU-CVE-2026-113352 |
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/uTox/uTox/issues/1587 issue-tracking
- https://github.com/uTox/uTox/pull/1602 issue-tracking, patch
- https://github.com/uTox/uTox/pull/1603 issue-tracking, patch
- https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/xlib/filesys.c#L191-L214 technical-description
- https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/file_transfers.c#L249-L290 technical-description
- https://github.com/uTox/uTox product
- VulnCheck Advisory: uTox through 0.18.1 Path Traversal via Auto-Accepted File Transfers third-party-advisory