Vulnerability · Published Jun 29, 2021 · Assigned by GitHub_M

CVE-2021-32721URL Redirection to Untrusted Site ('Open Redirect') in github.com/AndrewBurian/powermux

Medium 4.7

In plain English

A medium-severity open redirect in powermux from AndrewBurian. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.6%top 50.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/AndrewBurian/powermux	1.1.1	GHSA-mj9r-wwm8-7q52
Go	github.com/AndrewBurian/powermux	1.1.1	GO-2021-0237

Affected products (as reported)

Vendor	Product	Versions
AndrewBurian	powermux	< 1.1.1

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/AndrewBurian/powermux/security/advisories/GHSA-mj9r-wwm8-7q52 x_refsource_CONFIRM