Description
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.
Published: 2025-08-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-26143 HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads
Github GHSA Github GHSA GHSA-8f82-53h8-2p34 HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads
History

Thu, 18 Dec 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*

Sun, 31 Aug 2025 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Hashicorp
Hashicorp vault
Hashicorp vault Enterprise
Vendors & Products Hashicorp
Hashicorp vault
Hashicorp vault Enterprise

Fri, 29 Aug 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 29 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Thu, 28 Aug 2025 22:30:00 +0000

Type Values Removed Values Added
References

Thu, 28 Aug 2025 21:45:00 +0000


Thu, 28 Aug 2025 19:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Vault unauthenticated denial of service through complex json payload
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Hashicorp Vault Vault Enterprise
cve-icon MITRE

Status: PUBLISHED

Assigner: HashiCorp

Published:

Updated: 2025-10-23T18:18:34.361Z

Reserved: 2025-06-17T13:39:36.506Z

Link: CVE-2025-6203

cve-icon Vulnrichment

Updated: 2025-08-29T13:36:49.616Z

cve-icon NVD

Status : Analyzed

Published: 2025-08-28T20:15:43.817

Modified: 2025-12-18T17:55:00.780

Link: CVE-2025-6203

cve-icon Redhat

Severity : Important

Publid Date: 2025-08-28T19:36:09Z

Links: CVE-2025-6203 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-31T08:41:43Z

Weaknesses