{"id":"CVE-2026-46411","summary":"FlashMQ: Client can trigger uncaught exception on FlashMQ 1.26.1 and older","details":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.2, authorized clients have the ability to exceed the permitted over-commit of their write buffer and triggering an internal safe-guard exception. This exception was in a path that was not catchable, and therefore causes a server abort. This issue has been patched in version 1.26.2.","aliases":["GHSA-g35r-265r-rxrh"],"modified":"2026-07-08T08:13:37.961406473Z","published":"2026-06-09T23:01:33.212Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46411.json","cwe_ids":["CWE-248"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/halfgaar/FlashMQ/releases/tag/v1.26.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46411.json"},{"type":"ADVISORY","url":"https://github.com/halfgaar/FlashMQ/security/advisories/GHSA-g35r-265r-rxrh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46411"},{"type":"FIX","url":"https://github.com/halfgaar/FlashMQ/commit/29e08f7b97b6e3f96db923c2b6a260c47b49c195"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/halfgaar/flashmq","events":[{"introduced":"0"},{"fixed":"29e08f7b97b6e3f96db923c2b6a260c47b49c195"},{"fixed":"128a1ff0e926ead1ea9dfa287f2188fdf1f0c8d6"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.26.2"}]}}],"versions":["v1.26.1","v1.26.0","v1.25.0","v1.24.0","v1.23.0","v1.22.0","v1.21.1","v1.21.0","v1.20.0","v1.19.0","v1.18.2","v1.18.1","v1.18.0","v1.17.2","v1.17.1","v1.17.0","v1.16.0","v1.15.4","v1.15.3","v1.15.2","v1.15.1","v1.15.0","v1.14.0","v1.13.1","v1.13.0","v1.12.1","v1.12.0","v1.11.0","v1.10.0","v1.9.1","v1.9.0","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.11","v1.7.10","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.9","v1.6.8","v1.6.7","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.0","v1.4.5","v1.4.4","v1.4.3","v1.4.2","v1.4.1","v1.4.0","v1.3.1","v1.3.0","v1.2.1","v1.2.0","v1.1.0","v1.0.2","v1.0.1","v1.0.0","v0.13.1","v0.13.0","v0.12.1","v0.12.0","v0.11.9","v0.11.8","v0.11.7","v0.11.6","v0.11.5","v0.11.4","v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.10.1","v0.10.0","v0.9.9","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.1","v0.8.0","v0.7.1","v0.7.0","v0.6.3","v0.6.1","v0.6.0","v0.5.2","v0.5.1","v0.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46411.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}