URL Redirection to Untrusted Site ('Open Redirect') in github.com/AndrewBurian/powermux
Priority LOW 28CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-601.
Summary
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.
Why it matters now
EPSS 0.00606 49th percentileScored 2026-11-07
Fix Fixed powermux (AndrewBurian): 1.1.1github.com/AndrewBurian/powermux (Go): 1.1.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AndrewBurian | powermux | before 1.1.1 | 1.1.1 | Patch available | CNA |
| — | github.com/AndrewBurian/powermux (Go) | before 1.1.1 | 1.1.1 | Patch available | GHSA-mj9r-wwm8-7q52 |
- powermux VendorAndrewBurian Affected before 1.1.1 Fixed in 1.1.1 Patch available CNA
- github.com/AndrewBurian/powermux (Go) Vendor— Affected before 1.1.1 Fixed in 1.1.1 Patch available GHSA-mj9r-wwm8-7q52
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:powermux_project:powermux:*:*:*:*:*:*:*:* | before 1.1.1 | Vulnerable | Powermux Project |
- cpe:2.3:a:powermux_project:powermux:*:*:*:*:*:*:*:* Versions before 1.1.1 Vulnerable ·Powermux Project
Remediation
- Fix · CNA powermux (AndrewBurian) Fixed in 1.1.1
- Fix · GHSA-mj9r-wwm8-7q52 github.com/AndrewBurian/powermux (Go) Fixed in 1.1.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-32721
- 2026-10-03 Alias added: GHSA-mj9r-wwm8-7q52
References
Sources
- CVE-2021-32721 · CVE Program
- CVE-2021-32721 · NVD
- FIRST EPSS
- GHSA-mj9r-wwm8-7q52 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences