CVE-2026-46411: CWE-248: Uncaught Exception in halfgaar FlashMQ
CVE-2026-46411 is a vulnerability in halfgaar FlashMQ, an MQTT broker/server. Prior to version 1.26.2, authorized clients could cause the server to abort by exceeding the allowed write buffer over-commit, triggering an uncaught internal exception. This issue has been fixed in version 1.26.2.
AI Analysis
Technical Summary
FlashMQ versions before 1.26.2 contain a vulnerability where authorized clients can exceed the permitted over-commit of their write buffer, causing an internal safeguard exception. This exception occurs in an uncaught code path, resulting in a server abort. The vulnerability is identified as CWE-248 (Uncaught Exception). The issue has been patched in version 1.26.2.
Potential Impact
Exploitation of this vulnerability leads to a denial of service condition by causing the FlashMQ server to abort unexpectedly. There is no impact on confidentiality or integrity reported. The CVSS 3.1 base score is 6.5 (medium severity), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix is available in FlashMQ version 1.26.2. Users should upgrade to version 1.26.2 or later to remediate this vulnerability. No other mitigation guidance is provided or necessary as the issue is resolved by the patch.
CVE-2026-46411: CWE-248: Uncaught Exception in halfgaar FlashMQ
Description
CVE-2026-46411 is a vulnerability in halfgaar FlashMQ, an MQTT broker/server. Prior to version 1.26.2, authorized clients could cause the server to abort by exceeding the allowed write buffer over-commit, triggering an uncaught internal exception. This issue has been fixed in version 1.26.2.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FlashMQ versions before 1.26.2 contain a vulnerability where authorized clients can exceed the permitted over-commit of their write buffer, causing an internal safeguard exception. This exception occurs in an uncaught code path, resulting in a server abort. The vulnerability is identified as CWE-248 (Uncaught Exception). The issue has been patched in version 1.26.2.
Potential Impact
Exploitation of this vulnerability leads to a denial of service condition by causing the FlashMQ server to abort unexpectedly. There is no impact on confidentiality or integrity reported. The CVSS 3.1 base score is 6.5 (medium severity), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix is available in FlashMQ version 1.26.2. Users should upgrade to version 1.26.2 or later to remediate this vulnerability. No other mitigation guidance is provided or necessary as the issue is resolved by the patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T21:04:10.933Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a28a1018dd33fbd85928643
Added to database: 06/09/2026, 23:25:53 UTC
Last enriched: 06/17/2026, 09:01:10 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 80
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