{"id":"CVE-2026-5807","aliases":["BIT-vault-2026-5807","GHSA-88v5-9hxc-f85r","GO-2026-5247"],"url":"https://o3.security/vulnerability/CVE-2026-5807","summary":"Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations","details":"Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.","published":"2026-04-17T03:22:13.816Z","modified":"2026-07-31T18:29:53.854405381Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00718,"percentile":0.50399,"asOf":"2026-08-08"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/hashicorp/vault","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-5807"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5807.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5807"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2459109"},{"type":"PACKAGE","url":"https://github.com/hashicorp/vault"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:29:53.854405381Z"}}