---
title: "CVE-2026-55601: MultiTail - Command Injection"
description: "MultiTail <= 7.1.5 contains a command injection caused by insufficient escaping of shell metacharacters in the execute-on-match feature, letting attackers executing commands as the user running MultiTail, exploit requires attacker to control monitored input."
url: https://panop.io/threat-heartbeat/CVE-2026-55601/
---

# CVE-2026-55601 MultiTail - Command Injection

MultiTail <= 7.1.5 contains a command injection caused by insufficient escaping of shell metacharacters in the execute-on-match feature, letting attackers executing commands as the user running MultiTail, exploit requires attacker to control monitored input.

CVSS base score 7.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.21% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-55601)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Update to a fixed version once available or apply patches to properly escape shell metacharacters.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-55601](https://nvd.nist.gov/vuln/detail/CVE-2026-55601)
- [https://github.com/folkertvanheusden/multitail/commit/84f304e140261034e33796bab81e9bf4f09d153c](https://github.com/folkertvanheusden/multitail/commit/84f304e140261034e33796bab81e9bf4f09d153c)
- [https://github.com/folkertvanheusden/multitail/issues/56](https://github.com/folkertvanheusden/multitail/issues/56)
- [https://github.com/folkertvanheusden/multitail/security/advisories/GHSA-54vm-wwx8-856h](https://github.com/folkertvanheusden/multitail/security/advisories/GHSA-54vm-wwx8-856h)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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