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Vulnerability record · CVE-2026-26448 · published 26 August 2026

CVE-2026-26448: Use after free vulnerability

Stomper 5e2741e is vulnerable to Use-After-Free. When a client sends multiple CONNECT frames on the same TCP connection, and subsequently another client (or a later connection) sends SEND frames to a destination previously subscribed on that connection, the broker may dereference a pointer to a StompStreamSocket object that has already been freed. This results in a heap use-after-free and process crash. Because the protocol does not authenticate or restrict such sequences by default.

9.8 CVSS 3.1 Critical EPSS 0.55% · top 56.0% CWE-416 · Use after free Deferred
9.8CVSS 3.1 base score
0.55%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 client sends multiple CONNECT frames on the same TCP connection, and subsequently another client (or a later connection) sends SEND frames to a destination previously subscribed on that connection, the broker may dereference a pointer to a StompStreamSocket object that has already been freed. This results in a heap use-after-free and process crash. Because the protocol does not authenticate or restrict such sequences by default.

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

References

LinkTags
https://github.com/mdoi/stomper
https://github.com/songxpu/bug_report/blob/master/Stomp/stomper_vuln4.md
https://github.com/songxpu/bug_report/blob/master/Stomp/stomper_vuln4.md

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Source: NIST National Vulnerability Database (record CVE-2026-26448), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.