{"id":"CVE-2026-30833","summary":"Rocket.Chat: NoSQL injection in the EE ddp-streamer-service","details":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0, a NoSQL injection vulnerability exists in Rocket.Chat's account service used in the ddp-streamer micro service that allows unauthenticated attackers to manipulate MongoDB queries during authentication. The vulnerability is located in the username-based login flow where user-supplied input is directly embedded into a MongoDB query selector without validation. An attacker can inject MongoDB operator expressions (e.g., { $regex: '.*' }) in place of a username string, causing the database query to match unintended user records. This issue has been patched in versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0.","aliases":["GHSA-hgq6-9jg2-wf3f"],"modified":"2026-04-10T05:41:52.503897Z","published":"2026-03-06T17:40:36.939Z","database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30833.json","cwe_ids":["CWE-943"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30833.json"},{"type":"ADVISORY","url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-hgq6-9jg2-wf3f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30833"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rocketchat/rocket.chat","events":[{"introduced":"2ca98764a077deb7efb710ff1d8f78c5c3e4c4a3"},{"fixed":"f2a05ceed2086266fa3e36cf575c1794f68f00ab"}]}],"versions":["8.1.0","8.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30833.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}]}