high7.5
CVE-2025-6203
HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/hashicorp/vault | < 1.20.3 | 1.20.3 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Hashicorp | Vault | from 1.15.0 before 1.16.27 from 1.15.0 before 1.21.0 from 1.18.0 before 1.18.15 from 1.19.0 before 1.19.11 from 1.20.0 before 1.20.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://discuss.hashicorp.com/t/hcsec-2025-24-vault-denial-of-service-though-complex-json-payloads/76393
- https://github.com/advisories/GHSA-8f82-53h8-2p34
- https://nvd.nist.gov/vuln/detail/CVE-2025-6203
- https://discuss.hashicorp.com
- https://github.com/hashicorp/vault/commit/eedc2b7426f30e57e306229ce697ce81e203ab89