What’s Vulnerable › Vulnerabilities

CVE-2026-26448

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-26 · updated 2026-08-28
• Weakness: CWE-416

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.

References

• 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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