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Fencer Vulns
medium 6.6

CVE-2026-35365 json

uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion

published 2026-04-22 6 mo ago modified 2026-10-26 13 d ago also GHSA-h444-6j9x-p8vh , EUVD-2026-25012

cvss
6.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

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.

Patch / fix

  • crates.io uu_mv 0.7.0
  • Uutils coreutils 0.7.0
  • rust-coreutils Debian 14 0.8.0-1

debian advisories DEBIAN-CVE-2026-35365

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-35365 updated cvss 6.6

rust-coreutils: mv: denial of service and data duplication via improper symlink expansion

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
GitHub 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Affected packages

ecosystem package affected fixed in
crates.io uu_mv
<0.7.0
0.7.0

Affected products

  • Uutils coreutils

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.