CVE-2026-35375 uutils coreutils split Local Data Integrity Issue via Lossy Filename Encoding
Attackers can corrupt output filenames in split utility via non-UTF-8 inputs, causing data misdirection or collisions in non-UTF-8 environments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-35375?
CVE-2026-35375 is a low-severity vulnerability in Uutils coreutils, published on 22 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A logic error in the split utility of uutils coreutils causes the corruption of output filenames when provided with non-UTF-8 prefix or suffix inputs. The implementation utilizes to_string_lossy() when constructing chunk filenames, which automatically rewrites invalid byte sequences into the UTF-8 replacement character (U+FFFD). This behavior diverges from GNU split, which preserves raw pathname bytes intact. In environments utilizing non-UTF-8 encodings, this vulnerability leads to the creation of files with incorrect names, potentially causing filename collisions, broken automation, or the misdirection of output data.
Weakness: CWE-176
Which versions are affected by CVE-2026-35375?
2 open source packages ship an affected version, including coreutils. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
coreutils crates.io | All versions | 0.8.0 |
coreutils crates.io | All versions | 0.8.0 |
Products include Uutils Coreutils.
How do I fix CVE-2026-35375?
Upgrade coreutils to 0.8.0 or later.
Is CVE-2026-35375 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35375 exists.
Other vulnerabilities in Uutils coreutils
- CVE-2026-35338 uutils coreutils chmod Path Traversal Bypass of --preserve-root
- CVE-2026-35368 uutils coreutils chroot Local Privilege Escalation and chroot Escape in via Name Service Switch (NSS) Injection
- CVE-2026-35341 uutils coreutils mkfifo Unauthorized Permission Change on Existing Files
- CVE-2026-35352 uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition
- CVE-2026-35349 uutils coreutils Path-Based Safety Bypass with --preserve-root
Sources
Also known as DEBIAN-CVE-2026-35375, GHSA-vx9m-xjwf-8cqm, UBUNTU-CVE-2026-35375.