Main Vulnerability Database Vulnerabilities #VU153034

Input validation error in sshuttle - #VU153034

Published: October 1, 2026

Vulnerability identifier: #VU153034

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within untrusted DNS PTR content in auto-hosts parsing. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Affected software

sshuttle

Remediation

Install updates from vendor's website.

sshuttle - update to 2.0.0

Links to Public Exploits and PoC-codes

Exploit #13079 - Unauthenticated remote DoS via attacker-controlled reverse-DNS hostname in auto-hosts parsing (October 1, 2026)

External References

https://github.com/sshuttle/sshuttle/security/advisories/GHSA-5rfj-p5qw-w48g

Related Security Bulletins

Denial of service in sshuttle