CVE-2015-4155: GNU Parallel

Low severity, CVSS 3.6. EPSS: 0.4% chance of exploitation in the next 30 days.

GNU Parallel before 20150422, when using (1) --pipe, (2) --tmux, (3) --cat, (4) --fifo, or (5) --compress, allows local users to write to arbitrary files via a symlink attack on a temporary file.

Affected products

• GNU Parallel: up to and including 20150322

Published 2015-06-02. Last modified 2026-06-17.