{"id":"CVE-2026-12343","aliases":["EUVD-2026-104468","GHSA-4vv9-m5xv-x4cc"],"status":"published","title":"IBM MQ Denial of Service","description":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0024,"percentile":0.15228,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-10-19T16:40:37Z","modified":"2026-10-23T17:27:38Z","products":[{"vendor":"ibm","product":"mq advanced container images"},{"vendor":"ibm","product":"mq operator"},{"vendor":"ibm","product":"mq_operator"},{"vendor":"ibm","product":"supplied_mq_advanced_container_images"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7292667","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12343"},{"url":"https://github.com/advisories/GHSA-4vv9-m5xv-x4cc"}],"sources":{"cve":[{"id":"CVE-2026-12343","title":"IBM MQ Denial of Service","description":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.","status":"published","published":"2026-10-19T16:40:37.209Z","modified":"2026-10-19T17:52:17.052Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-104468","description":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.","status":"published","published":"2026-10-19T16:40:37Z","modified":"2026-10-19T17:52:17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:59:50.463489Z"}],"ghsa":[{"id":"GHSA-4vv9-m5xv-x4cc","title":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper...","description":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.","status":"published","published":"2026-10-19T18:32:15Z","modified":"2026-10-19T18:32:21Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:13:58.199856Z"}],"nvd":[{"id":"CVE-2026-12343","description":"IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.","status":"published","published":"2026-10-19T17:17:17.773Z","modified":"2026-10-23T17:27:38.86Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:13:00.83844Z"}]}}