All versions of com.gradle.plugin-publish before 0.11.0 are vulnerable to Insertion of Sensitive Information into Log File. When a plugin author publishes a Gradle plugin while running Gradle with the --info log level flag, the Gradle Logger logs an AWS pre-signed URL. If this build log is publicly visible (as it is in many popular public CI systems like TravisCI) this AWS pre-signed URL would allow a malicious actor to replace a recently uploaded plugin with their own.
The PGP signing plugin in Gradle before 6.0 relies on the SHA-1 algorithm, which might allow an attacker to replace an artifact with a different one that has the same SHA-1 message digest, a related issue to CVE-2005-4900.
The HTTP client in Gradle before 5.6 sends authentication credentials originally destined for the configured host. If that host returns a 30x redirect, Gradle also sends those credentials to all subsequent hosts that the request redirects to. This is similar to CVE-2018-1000007.
In Gradle Enterprise before 2018.5.2, Build Cache Nodes would reflect the configured password back when viewing the HTML page source of the settings page.
Gradle versions from 1.4 to 5.3.1 use an insecure HTTP URL to download dependencies when the built-in JavaScript or CoffeeScript Gradle plugins are used. Dependency artifacts could have been maliciously compromised by a MITM attack against the ajax.googleapis.com web site.