CVE-2026-1063Public exploitNetwork attack vector

Authenticated remote command execution via unescaped key content

Published Jan 17, 2026 · Updated Jan 17, 2026

Command injection in Bastillion 4.0.0 through 4.0.1 allows remote authenticated users to execute commands on managed systems via uploaded SSH keys. The upload path stores SSH public key text without sanitizing its content, and SSHUtil.addPubKey inserts that text into a single-quoted echo command. Public-key upload privileges and a distribution event are required; injected commands run on each target host receiving the key.

CVSS severity4.7
Medium
EPSS probability4.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Bastillion 4.0.0 through 4.0.1 allows remote authenticated users to execute commands on managed systems via uploaded SSH keys. The upload path stores SSH public key text without sanitizing its content, and SSHUtil.addPubKey inserts that text into a single-quoted echo command. Public-key upload privileges and a distribution event are required; injected commands run on each target host receiving the key.

The record

CVE
CVE-2026-1063
Published
Jan 17, 2026
Updated
Jan 17, 2026
Vendor
Loophole, LLC
Product
Bastillion
Classifications
CWE-77, CWE-74, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0
  2. Affected versionversion=4.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Loophole, LLC · Bastillionversion=4.0.0; version=4.0.1

Published CVSS scores

5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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