{"id":"AZL-105765","summary":"CVE-2026-67226 affecting package rabbitmq-server 3.13.7-9","details":"RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7, Admin-only atom exhaustion: PUT /api/users tags list. settags/2 maps rabbitdatacoercion:toatom/1 over the user's tags list. The 20 MB management body limit fits ~3-4M short tag strings. An administrator can crash the node in a single request by creating a user (or importing definitions) with ~1M unique tag administrator. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7.","modified":"2026-10-04T05:34:07Z","published":"2026-09-25T17:17:11Z","upstream":["CVE-2026-67226"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67226"}],"affected":[{"package":{"name":"rabbitmq-server","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/rabbitmq-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.13.7-9"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105765.json"}}],"schema_version":"1.9.0"}