Vulnerability · Published Oct 23, 2025 · Assigned by HashiCorp
CVE-2025-11621Vault AWS auth method bypass due to AWS client cache
High 8.1
In plain English
A high-severity authentication bypass in Vault from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Vault and Vault Enterprise’s (“Vault”) AWS Auth method may be susceptible to authentication bypass if the role of the configured bound_principal_iam is the same across AWS accounts, or uses a wildcard. This vulnerability, CVE-2025-11621, is fixed in Vault Community Edition 1.21.0 and Vault Enterprise 1.21.0, 1.20.5, 1.19.11, and 1.16.27
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/hashicorp/vault | 1.21.0 | GHSA-9g4h-h484-3578 |
| Go | github.com/hashicorp/vault | 1.21.0 | GO-2025-4070 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HashiCorp | Vault | 0.6.0 – before 1.21.0 |
| HashiCorp | Vault Enterprise | 0.6.0 – before 1.21.0 |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N