CVE-2026-5807
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.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-26)
- CWE
- CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- hashicorp:vault
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-88v5-9hxc-f85r | Go | github.com/hashicorp/vault | <=1.21.4 | no fix published |
| GO-2026-5247 | Go | github.com/hashicorp/vault | all versions | no fix published |
References
- https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345
- https://access.redhat.com/security/cve/CVE-2026-5807
- https://bugzilla.redhat.com/show_bug.cgi?id=2459109
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json