CVE-2025-6203 — Vault unauthenticated denial of service through complex json payload
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 Vaul…
Published: 2025-08-28 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7