Vulnerability · Published Oct 23, 2025 · Assigned by GitHub_M
CVE-2025-59048OpenBao AWS Plugin Vulnerable to Cross-Account IAM Role Impersonation in AWS Auth Method
High 8.1
In plain English
A high-severity incorrect authorization in openbao-plugins from openbao. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
OpenBao's AWS Plugin generates AWS access credentials based on IAM policies. Prior to version 0.1.1, the AWS Plugin is vulnerable to cross-account IAM role Impersonation in the AWS auth method. The vulnerability allows an IAM role from an untrusted AWS account to authenticate by impersonating a role with the same name in a trusted account, leading to unauthorized access. This impacts all users of the auth-aws plugin who operate in a multi-account AWS environment where IAM role names may not be unique across accounts. This vulnerability has been patched in version 0.1.1 of the auth-aws plugin. A workaround for this issue involves guaranteeing that IAM role names are unique across all AWS accounts that could potentially interact with your OpenBao environment, and to audit for any duplicate IAM roles.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/openbao/openbao-plugins | 0.1.1 | GHSA-jp7h-4f3c-9rc7 |
| Go | github.com/openbao/openbao-plugins | no fix listed | GO-2025-4067 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| openbao | openbao-plugins | < 0.1.1 |
Weakness: CWE-863, CWE-694 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N