{"cve":"CVE-2021-27601","nvd":{"published":"2021-04-13T19:15:15.257","modified":"2026-06-17T03:45:12.423","status":"Modified","description":"SAP NetWeaver AS Java (Applications based on HTMLB for Java) allows a basic-level authorized attacker to store a malicious file on the server. When a victim tries to open this file, it results in a Cross-Site Scripting (XSS) vulnerability and the attacker can read and modify data. However, the attacker does not have control over kind or degree.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://launchpad.support.sap.com/#/notes/2963592","https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=573801649","https://launchpad.support.sap.com/#/notes/2963592","https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=573801649"],"products":["sap:netweaver_application_server_java"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-27601","score":0.00473,"percentile":0.40933,"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."]}