Path Traversal in Utox
CVE-2026-113352
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/uTox/uTox/issues/1587 (issue-tracking)
- github.com/uTox/uTox/pull/1602 (issue-tracking, patch)
- github.com/uTox/uTox/pull/1603 (issue-tracking, patch)
- github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/xlib/fil… (technical-description)
- github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/file_tra… (technical-description)
- github.com/uTox/uTox (product)
- www.vulncheck.com/advisories/utox-through-0.18.1-path-traversal-via-auto-accept… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-113352?
- CVE-2026-113352 is a high-severity vulnerability in Utox, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-10-20.
- How severe is CVE-2026-113352?
- High severity. CVSS v3 base score is 7.5 out of 10.