{"cve":"CVE-2021-3531","nvd":{"published":"2021-05-18T12:15:08.080","modified":"2026-06-17T04:05:18.197","status":"Modified","description":"A flaw was found in the Red Hat Ceph Storage RGW in versions before 14.2.21. When processing a GET Request for a swift URL that ends with two slashes it can cause the rgw to crash, resulting in a denial of service. The greatest threat to the system is of availability.","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:L","score":5.3},"cwes":["CWE-617","CWE-20"],"references":["http://www.openwall.com/lists/oss-security/2021/05/14/5","http://www.openwall.com/lists/oss-security/2021/05/17/7","https://bugzilla.redhat.com/show_bug.cgi?id=1955326","https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX5ZHI5L7FOHXOSEV3TYBAL66DMLJ7V5/"],"products":["fedoraproject:fedora","redhat:ceph","redhat:ceph_storage"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-3531","score":0.02177,"percentile":0.82339,"date":"2026-10-31"},"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."]}