{"id":"CVE-2024-56136","summary":"/api/v1/jwt/fetch_api_key endpoint can leak if an email address has an account in Zulip server","details":"Zulip server provides an open-source team chat that helps teams stay productive and focused. Zulip Server 7.0 and above are vulnerable to an information disclose attack, where, if a Zulip server is hosting multiple organizations, an unauthenticated user can make a request and determine if an email address is in use by a user. Zulip Server 9.4 resolves the issue, as does the `main` branch of Zulip Server. Users are advised to upgrade. There are no known workarounds for this issue.","aliases":["GHSA-5xg8-xhfj-4hm6"],"modified":"2026-08-12T03:51:33.116810641Z","published":"2025-01-16T19:25:33.261Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-200"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56136.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56136.json"},{"type":"ADVISORY","url":"https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56136"},{"type":"FIX","url":"https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zulip/zulip","events":[{"introduced":"88873138acde0f6b66dfe09b086e5ab327be940b"},{"fixed":"b762cdde481456c39a09602f1d7e0e898bdbd876"},{"fixed":"c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d"}],"database_specific":{"cpe":"cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"7.0"},{"fixed":"9.4"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["9.3","9.2","9.1","9.0","9.0-beta1","8.0","9.0-dev","8.0-beta2","8.0-beta1","8.0-dev","7.0","7.0-beta3","shared-0.0.18","shared-0.0.17","7.0-dev"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56136.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}