Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://metacpan.org/release/PETDANCE/ack-v3.10.0/source/Changes
- http://www.openwall.com/lists/oss-security/2026/07/08/9
FAQ
What is CVE-2026-49147?
CVE-2026-49147 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-49147?
CVE-2026-49147 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49147?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.