CVE-2025-6203

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Source
https://cve.org/CVERecord?id=CVE-2025-6203
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-6203.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-6203
Aliases
Downstream
CGA (28)
MINI (1)
openSUSE (3)
SUSE (1)
Related
openSUSE (3)
SUSE (1)
Published
2025-08-28T19:36:09Z
Modified
2026-10-24T10:53:51Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Vault unauthenticated denial of service through complex json payload
Details

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.

Database specific 
{
    "cna_assigner": "HashiCorp",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6203.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "1.15.0"
                        },
                        {
                            "fixed": "1.20.5"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "ChangesAt"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/hashicorp/vault

Affected ranges

Type
GIT
Repo
https://github.com/hashicorp/vault
Events
Introduced
b4d07277a6c5318bb50d3b94bbd6135dccb4c601
Fixed
818ca8b3575ea937ca48b640baf35e1b2ede1833
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "1.15.0"
                },
                {
                    "fixed": "1.21.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*",
            "range": [
                {
                    "introduced": "1.15.0"
                },
                {
                    "fixed": "1.21.0"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-6203.json"