CVE WatchOct 13, 2026

CVE-2026-55601

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 fea

CVSS

7.3

High

EPSS

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KEV

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Exploit Today

0-100

Published: Oct 13, 2026 · Last modified: Oct 13, 2026 · CWE-78

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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