{"cve":"CVE-2021-32721","nvd":{"published":"2021-06-29T19:15:09.707","modified":"2026-06-17T03:53:29.883","status":"Modified","description":"PowerMux is a drop-in replacement for Go's http.ServeMux. In PowerMux versions prior to 1.1.1, attackers may be able to craft phishing links and other open redirects by exploiting the trailing slash redirection feature. This may lead to users being redirected to untrusted sites after following an attacker crafted link. The issue is resolved in v1.1.1. There are no existing workarounds.","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-601"],"references":["https://github.com/AndrewBurian/powermux/security/advisories/GHSA-mj9r-wwm8-7q52","https://github.com/AndrewBurian/powermux/security/advisories/GHSA-mj9r-wwm8-7q52"],"products":["powermux_project:powermux"],"source":"nvd","synced_at":"2026-10-19T21:20:07.141963181+00:00"},"epss":{"cve":"CVE-2021-32721","score":0.00606,"percentile":0.48997,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mj9r-wwm8-7q52","url":"https://osv.dev/vulnerability/GHSA-mj9r-wwm8-7q52","summary":"Open Redirect in github.com/AndrewBurian/powermux","modified":"2026-07-08T06:28:52.800795149Z","packages":[{"ecosystem":"Go","name":"github.com/AndrewBurian/powermux","purl":"pkg:golang/github.com/AndrewBurian/powermux","ranges":["<1.1.1"],"fixed":["1.1.1"]}]},{"id":"GO-2021-0237","url":"https://osv.dev/vulnerability/GO-2021-0237","summary":"Open redirect in github.com/AndrewBurian/powermux","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/AndrewBurian/powermux","purl":"pkg:golang/github.com/AndrewBurian/powermux","ranges":["<1.1.1"],"fixed":["1.1.1"]}]}],"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."]}