CVE-2021-26291: Apache Maven

Critical severity, CVSS 9.1. EPSS: 8.7% chance of exploitation in the next 30 days.

Apache Maven will follow repositories that are defined in a dependency’s Project Object Model (pom) which may be surprising to some users, resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that repository. Maven is changing the default behavior in 3.8.1+ to no longer follow http (non-SSL) repository references by default. More details available in the referenced urls. If you are currently using a repository manager to govern the repositories used by your builds, you are unaffected by the risks present in the legacy behavior, and are unaffected by this vulnerability and change to default behavior. See this link for more information about repository management: https://maven.apache.org/repository-management.html

Affected products

• Apache Maven: before 3.8.1 (fixed in 3.8.1)
• Oracle Financial Services Analytical Applications Infrastructure: from 8.0.6.0.0, up to and including 8.0.9.0.0; from 8.1.0.0.0, up to and including 8.1.2.0
• Oracle Goldengate Big Data And Application Adapters: version 23.1 only
• Quarkus Quarkus: before 1.13.5 (fixed in 1.13.5)

Published 2021-04-23. Last modified 2026-06-17.