Advisoriesby IbisVaultGHSA-8f82-53h8-2p34
HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads
Fix: upgrade to 1.20.3 or later
A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| github.com/hashicorp/vault Go | < 1.20.3 | 1.20.3 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-770
- Also known as
- BIT-vault-2025-6203, CVE-2025-6203, GO-2025-3924
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