CVE-2026-26447
High · 7.5CVSS
7.5
EPSS
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Published
Aug 26, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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