LDAP Injection Affecting github.com/foxcpp/maddy/internal/auth/ldap package, versions >=0.5.0 <0.9.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMFOXCPPMADDYINTERNALAUTHLDAP-16083672
- published16 Apr 2026
- disclosed13 Apr 2026
- creditRealHurrison, Ghost1032
Introduced: 13 Apr 2026
CVE-2026-40193 (opens in a new tab)How to fix?
Upgrade github.com/foxcpp/maddy/internal/auth/ldap to version 0.9.3 or higher.
Overview
Affected versions of this package are vulnerable to LDAP Injection through the Lookup and AuthPlain functions in internal/auth/ldap/ldap.go. An attacker can authenticate or enumerate accounts by supplying a username that contains LDAP filter metacharacters, causing the username to be interpolated into the search filter or DN template without being escaped. This lets the attacker alter the LDAP query used for account lookup and bind, which can result in unauthorized login to another account or denial of service for users whose names are parsed as part of the injected expression.