{"cve":"CVE-2025-6203","nvd":{"published":"2025-08-28T20:15:43.817","modified":"2026-09-26T00:10:00.127","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://discuss.hashicorp.com/t/hcsec-2025-24-vault-denial-of-service-though-complex-json-payloads/76393"],"products":["hashicorp:vault"],"source":"nvd","synced_at":"2026-10-19T22:07:46.309729541+00:00"},"epss":{"cve":"CVE-2025-6203","score":0.00734,"percentile":0.54416,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-8f82-53h8-2p34","url":"https://osv.dev/vulnerability/GHSA-8f82-53h8-2p34","summary":"HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads","modified":"2026-09-10T03:50:57.952830940Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/vault","purl":"pkg:golang/github.com/hashicorp/vault","ranges":["<1.20.3"],"fixed":["1.20.3"]}]},{"id":"GO-2025-3924","url":"https://osv.dev/vulnerability/GO-2025-3924","summary":"HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads in github.com/hashicorp/vault","modified":"2026-02-04T03:42:27.303346Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/vault","purl":"pkg:golang/github.com/hashicorp/vault","ranges":["<1.20.3"],"fixed":["1.20.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}