SB2025102442 - Multiple vulnerabilities in HashiCorp Vault Community and Enterprise

Description

This security bulletin contains information about 2 vulnerabilities.

1) Authentication bypass using an alternate path or channel (CVE-ID: CVE-2025-11621)

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the authentication bypass using an alternate path or channel within AWS Auth method. A remote user can gain acces to sensitive data and potentially gain elevated privileges.

2) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2025-12044)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to rate limit regression when processing JSON payloads. A remote attacker can cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References

• https://discuss.hashicorp.com/t/hcsec-2025-30-vault-aws-auth-method-authentication-bypass-through-mishandling-of-cache-entries/76709
• https://discuss.hashicorp.com/t/hcsec-2025-31-vault-vulnerable-to-denial-of-service-due-to-rate-limit-regression/76710