{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-55762: Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-55762","status":"final","version":"1","initial_release_date":"2026-06-24T21:08:01.271Z","current_release_date":"2026-06-25T12:34:32.535Z","revision_history":[{"date":"2026-06-24T21:08:01.271Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user — including a standard user role account — can call this endpoint with {\"setDeploymentAs\": \"new-workspace\"} to permanently deregister the workspace from Rocket.Chat Cloud. This wipes all cloud credentials, removes the workspace license, breaks push notifications for all users, and requires manual re-registration to recover. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-55762 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-55762"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-55762"},{"category":"external","summary":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-8hhc-j325-rxqp","url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-8hhc-j325-rxqp"}]},"product_tree":{"branches":[{"category":"vendor","name":"RocketChat","branches":[{"category":"product_name","name":"Rocket.Chat","branches":[{"category":"product_version","name":">= 8.5.0-rc.0, < 8.5.1","product":{"name":"RocketChat Rocket.Chat >= 8.5.0-rc.0, < 8.5.1","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 8.4.0-rc.0, < 8.4.4","product":{"name":"RocketChat Rocket.Chat >= 8.4.0-rc.0, < 8.4.4","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 8.3.0-rc.0, < 8.3.6","product":{"name":"RocketChat Rocket.Chat >= 8.3.0-rc.0, < 8.3.6","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 8.2.0-rc.0, < 8.2.6","product":{"name":"RocketChat Rocket.Chat >= 8.2.0-rc.0, < 8.2.6","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 8.1.0-rc.0, < 8.1.6","product":{"name":"RocketChat Rocket.Chat >= 8.1.0-rc.0, < 8.1.6","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":">= 7.11.0-rc.0, < 8.0.7","product":{"name":"RocketChat Rocket.Chat >= 7.11.0-rc.0, < 8.0.7","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"< 7.10.13","product":{"name":"RocketChat Rocket.Chat < 7.10.13","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:rocketchat:rocket.chat:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-55762","title":"Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint","notes":[{"category":"description","text":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user — including a standard user role account — can call this endpoint with {\"setDeploymentAs\": \"new-workspace\"} to permanently deregister the workspace from Rocket.Chat Cloud. This wipes all cloud credentials, removes the workspace license, breaks push notifications for all users, and requires manual re-registration to recover. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7"]}]}]}