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Vulnerability record · CVE-2026-26447 · published 26 August 2026

CVE-2026-26447: Use after free vulnerability

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap use-after-free during StompClient destruction, causing the broker process to crash. An unauthenticated client can exploit this to reliably trigger a denial of service.

7.5 CVSS 3.1 High EPSS 0.49% · top 60.5% CWE-416 · Use after free Deferred
7.5CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
28 Aug 2026Last modified by NVD

Description

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap use-after-free during StompClient destruction, causing the broker process to crash. An unauthenticated client can exploit this to reliably trigger a denial of service.

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

References

LinkTags
https://github.com/mdoi/stomper
https://github.com/songxpu/bug_report/blob/master/Stomp/stomper_vuln3.md
https://github.com/songxpu/bug_report/blob/master/Stomp/stomper_vuln3.md

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-26447), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.