CVE-2026-49147
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.
- Score
- CVSS 3.1 7.5 High
- Status
- Deferred - 9b29abf9-4ab0-4765-b253-1875cd9b441e
- Published
- 2026-07-08
- Last modified
- 2026-10-25
- Weaknesses
- CWE-150
Affected products
References
- https://metacpan.org/release/PETDANCE/ack-v3.10.0/source/Changes
- http://www.openwall.com/lists/oss-security/2026/07/08/9
