{"cve":"CVE-2021-25963","nvd":{"published":"2021-09-30T08:15:06.357","modified":"2026-06-17T03:42:41.190","status":"Modified","description":"In Shuup, versions 1.6.0 through 2.10.8 are vulnerable to reflected Cross-Site Scripting (XSS) that allows execution of arbitrary javascript code on a victim browser. This vulnerability exists due to the error page contents not escaped.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://github.com/shuup/shuup/commit/75714c37e32796eb7cbb0d977af5bcaa26573588","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25963","https://github.com/shuup/shuup/commit/75714c37e32796eb7cbb0d977af5bcaa26573588","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25963"],"products":["shuup:shuup"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-25963","score":0.00955,"percentile":0.61401,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5pcx-vqjp-p34w","url":"https://osv.dev/vulnerability/GHSA-5pcx-vqjp-p34w","summary":"Cross-site Scripting in shuup","modified":"2024-10-23T18:52:31.845008Z","packages":[{"ecosystem":"PyPI","name":"shuup","purl":"pkg:pypi/shuup","ranges":[">=1.6.0 <2.11.0"],"fixed":["2.11.0"]}]},{"id":"PYSEC-2021-350","url":"https://osv.dev/vulnerability/PYSEC-2021-350","summary":"","modified":"2023-11-08T04:05:19.003961Z","packages":[{"ecosystem":"PyPI","name":"shuup","purl":"pkg:pypi/shuup","ranges":[">=1.6.0 <2.11.0"],"fixed":["2.11.0"]}]}],"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."]}