Command Injection Vulnerability in Bastillion Public Key Management System
CVE-2026-1063

5.1MEDIUM

Key Information:

Vendor

Bastillion-io

Status
Bastillion
Vendor
CVE Published:
17 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1063?

A command injection vulnerability has been detected in the Bastillion Public Key Management System, specifically in the AuthKeysKtrl.java file. This weakness allows attackers to manipulate the system remotely, potentially leading to unauthorized command execution. The affected versions include Bastillion up to 4.0.1, and despite early disclosure to the vendor, there has been no response or resolution provided. This public knowledge of the exploit raises concerns about the security posture of users running vulnerable versions.

Affected Version(s)

Bastillion 4.0.0

Bastillion 4.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-1063 - Proof of Concept

References

https://vuldb.com/?id.341631
vdb-entry
https://vuldb.com/?ctiid.341631
signaturepermissions-required
https://vuldb.com/?submit.731303
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ana10gy (VulDB User)
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