Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The HashiCorp Vault package (github.com/hashicorp/vault) before 1.20.2 may not correctly enforce MFA for the ldap auth method when username_as_alias is set to true and a user has multiple CNs that differ only by leading or trailing spaces. The source does not describe the attacker's position or prerequisites beyond these settings. Upgrade to Vault 1.20.2 or later; Vault Enterprise fixes are also listed for 1.19.8, 1.18.13, and 1.16.24.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | CNA (HashiCorp) |
- CISA KEV Not listed.
- EPSS 0.0057, the 47th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV