{"cve":"CVE-2021-26558","nvd":{"published":"2021-11-11T10:15:07.480","modified":"2026-06-17T03:43:28.450","status":"Modified","description":"Deserialization of Untrusted Data vulnerability of Apache ShardingSphere-UI allows an attacker to inject outer link resources. This issue affects Apache ShardingSphere-UI Apache ShardingSphere-UI version 4.1.1 and later versions; Apache ShardingSphere-UI versions prior to 5.0.0.","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:H/A:N","score":7.5},"cwes":["CWE-502"],"references":["http://www.openwall.com/lists/oss-security/2021/11/11/1","https://lists.apache.org/thread/4gzkm1zb6c97v9gl8lcz8ll5xr8o484c","http://www.openwall.com/lists/oss-security/2021/11/11/1","https://lists.apache.org/thread/4gzkm1zb6c97v9gl8lcz8ll5xr8o484c"],"products":["apache:shardingsphere-ui"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-26558","score":0.02491,"percentile":0.84654,"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."]}