CVE-2026-26446

Stomper 5e2741e is vulnerable to Denial of Service. When a broker sends data to a client whose...

7.5 High

Stomper 5e2741e is vulnerable to Denial of Service. When a broker sends data to a client whose TCP connection was already closed by the peer, the server process receives SIGPIPE and immediately terminates, resulting in a denial of service. Any unauthenticated client can trigger the crash by closing the socket at specific points.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.49%Up 0.3 points since Aug 27, 2026

What each source reports

CVE List Score used 7.5

Record: CVE-2026-26446
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-703
Updated: 2026-11-02

EUVDEUVD-2026-66755 7.5

Record: EUVD-2026-66755
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-22jf-r33c-m8rf 7.5

Stomper 5e2741e is vulnerable to Denial of Service. When a broker sends data to a client whose...

Record: GHSA-22jf-r33c-m8rf
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-703
Updated: 2026-11-02

NVD 7.5

Record: CVE-2026-26446
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-703
Updated: 2026-11-02

OSV 7.5

Record: CVE-2026-26446
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-26446 7.5

Record: UBUNTU-CVE-2026-26446
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`stomper` Ubuntu:16.04:LTS	All versions, plus listed versions 0.3.0-1	None known
`stomper` Ubuntu:18.04:LTS	All versions, plus listed versions 0.3.0-1	None known
`stomper` Ubuntu:20.04:LTS	All versions, plus listed versions 0.4.1-2	None known
`stomper` Ubuntu:22.04:LTS	All versions, plus listed versions 0.4.1-20.4.3-1	None known
`stomper` Ubuntu:24.04:LTS	All versions, plus listed versions 0.4.3-20.4.3-3	None known
`stomper` Ubuntu:26.10	All versions, plus listed versions 0.4.3-3build1	None known
`stomper` Ubuntu:26.04:LTS	All versions, plus listed versions 0.4.3-30.4.3-3build1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-26446 is a high vulnerability (CVSS 7.5) in stomper, published August 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.