CVE-2026-55601: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in folkertvanheusden multitail
Description
MultiTail is a utility for monitoring multiple log files in one terminal. In version 7.1.5 and earlier, the -ex and -eX execute-on-match feature appended attacker-controlled matched input to a configured command inside double quotes, then check_filter_exec() in mt.c passed the constructed command through execute_program() in exec.c to sh -c. Partial escaping left shell metacharacters such as command substitution active, allowing an attacker who could influence monitored input to execute commands as the user running MultiTail. No fixed release is available as of this review.
CVSS v3.1
Score 7.3high
Affected software
folkertvanheusden
multitail
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T23:18:03.170Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace881c2cdf04f656a23528
Added to database: 10/13/2026, 19:35:56 UTC
Last updated: 10/13/2026, 19:35:56 UTC
Views: 1
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