CVE-2026-49147: Petdance App::ack

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

App::Ack versions through 3.10.0 for Perl print unsanitised terminal escape sequences from filenames in several output modes. When ack prints a filename whose basename contains terminal control bytes such as ANSI escape sequences, those bytes reach the terminal unchanged. Version 3.10.0 added a _safe_filename helper that sanitises the filenames printed by -f, -g, the colored match heading, and per-match lines, but the --show-types, -l/-L, and -c paths still emit the raw filename. A file whose name embeds cursor-movement or color escapes can overwrite or recolor earlier terminal output, or be passed unchanged to a downstream consumer.

Affected products

• Petdance App::ack: up to and including 3.10.0

Published 2026-07-08. Last modified 2026-07-08.