{"cve":"CVE-2021-28963","nvd":{"published":"2021-03-22T08:15:13.247","modified":"2026-06-17T03:47:05.517","status":"Modified","description":"Shibboleth Service Provider before 3.2.1 allows content injection because template generation uses attacker-controlled parameters.","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:L/A:N","score":5.3},"cwes":["CWE-74"],"references":["https://bugs.debian.org/985405","https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=d1dbebfadc1bdb824fea63843c4c38fa69e54379","https://issues.shibboleth.net/jira/browse/SSPCPP-922","https://shibboleth.net/community/advisories/secadv_20210317.txt","https://www.debian.org/security/2021/dsa-4872"],"products":["debian:debian_linux","shibboleth:service_provider"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-28963","score":0.01305,"percentile":0.70538,"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."]}