{"cve":"CVE-2026-86471","nvd":{"published":"2026-10-20T16:17:15.217","modified":"2026-10-21T04:18:11.080","status":"Deferred","description":"An unvalidated runtime configuration value in Apache CouchDB 3.5.2 and below on all platforms allows a CouchDB server admin to run arbitrary shell commands as the CouchDB operating system user.\n\nUsers are recommended to upgrade to version 3.5.3, which fixes this issue.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:A/S:N/AU:Y/R:U/V:C/RE:M/U:Red","score":9.3},"cvss_v3":null,"cwes":["CWE-78"],"references":["https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f","https://lists.apache.org/thread/c8p73gswgogtnzvk7hpw8jb8d4mnosdp","http://www.openwall.com/lists/oss-security/2026/10/20/11"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-86471","score":0.00606,"percentile":0.48703,"date":"2026-10-25"},"kev":null,"osv":[],"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."]}