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3.7

Wheels allows limited file access through case‑mismatch paths

CVE-2026-111448 · published 3 days ago
Summary

Versions 4.0.0 to 4.1.2 of the Wheels package can be tricked into reading files outside its intended folders when the operating system treats file names as case‑sensitive. This happens because the software checks folder paths without respecting case differences, potentially exposing some internal files. Upgrade to version 4.2.0 or later to close the gap.

What to do
  • Update wheels wheels to version 4.2.0 or later.
Affected software
VendorProductAffected versions
wheels wheels < 4.2.0
Original advisory text
Wheels 4.0.0 through 4.1.2 uses case-insensitive comparisons in path-containment checks on case-sensitive filesystems. Canonical-path checks for zip entries, package mappings, development assets/do...
Wheels 4.0.0 through 4.1.2 uses case-insensitive comparisons in path-containment checks on case-sensitive filesystems. Canonical-path checks for zip entries, package mappings, development assets/docs, guide images and image tags can accept paths through an existing symlink to a case-distinct sibling directory, allowing access outside the intended root, including limited file disclosure. Separately, the CLI database-dump output check can write outside the application root to an existing writable case-distinct sibling directory; that action requires the CLI POST, loopback and password gate. This is fixed in 4.2.0.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
3.7 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-178Improper Handling of Case Sensitivity
Timeline
Published16 Oct 2026
Updated17 Oct 2026
First seen16 Oct 2026
Sources
CVE-2026-111448 · NVD
CVE-2026-111448 · MITRE
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