CVE-2026-26447: n/a
Description
Stomper 5e2741e contains a use-after-free vulnerability triggered when a client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes it. This improper cleanup of internal subscription structures causes a heap use-after-free during client destruction, leading to a broker crash. An unauthenticated attacker can exploit this to cause a denial of service.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-26447 describes a use-after-free vulnerability in Stomper 5e2741e. When a single client repeatedly sends SUBSCRIBE commands for the same destination over a single connection and then closes that connection, the broker incorrectly cleans up its internal subscription data structures. This results in a heap use-after-free during the destruction of the StompClient object, causing the broker process to crash. The vulnerability can be exploited by an unauthenticated client to reliably trigger a denial of service condition.
Potential Impact
The vulnerability allows an unauthenticated attacker to cause a denial of service by crashing the broker process. There is no indication of confidentiality or integrity impact. The CVSS score of 7.5 reflects a high severity denial of service vulnerability with network attack vector, low attack complexity, no privileges required, and no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting or monitoring SUBSCRIBE command usage patterns or applying network-level controls to restrict unauthenticated client connections if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-02-16T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a8f4799acd9273b49557d8c
Added to database: 08/26/2026, 20:07:53 UTC
Last enriched: 09/09/2026, 15:52:33 UTC
Last updated: 10/10/2026, 06:48:15 UTC
Views: 78
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