CVE-2026-35365 uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion
Attackers can cause resource exhaustion and duplicate sensitive data by exploiting improper symlink handling in the mv utility during cross-filesystem moves.
- 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-2026-35365?
CVE-2026-35365 is a medium-severity denial of service 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
The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.
Weakness: CWE-59
Which versions are affected by CVE-2026-35365?
2 open source packages ship an affected version, including uu_mv. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
uu_mv crates.io | All versions | 0.7.0 |
uu_mv crates.io | All versions | 0.7.0 |
Products include Uutils Coreutils.
How do I fix CVE-2026-35365?
Upgrade uu_mv to 0.7.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-35365 being exploited?
There is no known exploitation of CVE-2026-35365 in the wild and no public exploit code.
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-2026-35365, GHSA-h444-6j9x-p8vh, UBUNTU-CVE-2026-35365.