{"id":"CVE-2021-27400","aliases":["ALPINE-CVE-2021-27400","BIT-vault-2021-27400","EUVD-2021-14155","GHSA-4wr6-x9g6-m47v"],"status":"published","title":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets...","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00568,"percentile":0.47538,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2021-04-22T16:48:07Z","modified":"2026-11-03T06:32:38Z","fixes":[{"ecosystem":"Alpine:v3.14","package":"vault","fixed_in":["1.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"vault","fixed_in":["1.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"vault","fixed_in":["1.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"vault","fixed_in":["1.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"vault","fixed_in":["1.7.1-r0"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"vault","fixed_in":["1.6.4","1.7.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.14","package":"vault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"vault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"vault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"vault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"vault","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7.0"},{"fixed":"1.7.1-r0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"vault","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.6.4"},{"introduced":"1.7.0"},{"fixed":"1.7.1"}]}]}],"products":[{"vendor":"hashicorp","product":"vault"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2021-10-vault-s-cassandra-integrations-did-not-validate-tls-certificates/23463","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27400","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4wr6-x9g6-m47v"},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-27400","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-27400","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","status":"published","published":"2021-04-22T16:48:07Z","modified":"2024-08-03T20:48:16.803Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14155","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","status":"published","published":"2021-04-22T16:48:07Z","modified":"2024-08-03T20:48:16Z","updated_at":"2026-11-03T03:24:49.368497Z"}],"ghsa":[{"id":"GHSA-4wr6-x9g6-m47v","title":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets...","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","status":"published","published":"2022-05-24T17:48:09Z","modified":"2023-01-29T05:06:26Z","cwes":["CWE-295"],"updated_at":"2026-11-02T14:46:01.439998Z"}],"nvd":[{"id":"CVE-2021-27400","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","status":"published","published":"2021-04-22T17:15:07.723Z","modified":"2026-06-17T03:44:47.36Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:06:52.03307Z"}],"osv":[{"id":"ALPINE-CVE-2021-27400","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. 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Fixed in 1.6.4 and 1.7.1","status":"published","published":"2021-04-22T17:15:07.723Z","modified":"2026-10-24T10:30:16.752072975Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"BIT-vault-2021-27400","description":"HashiCorp Vault and Vault Enterprise Cassandra integrations (storage backend and database secrets engine plugin) did not validate TLS certificates when connecting to Cassandra clusters. Fixed in 1.6.4 and 1.7.1","status":"published","published":"2024-03-06T11:11:09.512Z","modified":"2026-09-08T08:48:21.169128324Z","updated_at":"2026-11-02T15:28:36.104787Z"}]}}