CVE-2026-26448
Critical · 9.8CVSS
9.8
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 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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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