Appsecure logo

CVE-2021-26291: Critical Vulnerability in Apache Maven

A critical vulnerability in Apache Maven could allow attackers to exploit repository behaviors, leading to potential risks. Organizations should prioritize patching to mitigate risks associated with repository management in Maven.

CRITICALPublic ExploitCVSS 9.1 · Published April 23, 2021

Not a customer? See how AppSecure simulates real world attacks to protect your infrastructure.

Speak to Experts

The vulnerability identified as CVE-2021-26291 affects Apache Maven, a widely used project management and comprehension tool in the Java ecosystem. This vulnerability allows Maven to follow repositories defined in a dependency’s Project Object Model (pom), which could lead to unexpected and potentially dangerous behavior if a malicious actor takes control of such a repository. This issue is particularly concerning for organizations that rely on third-party dependencies without adequate oversight.

The severity of this vulnerability is classified as critical, with a CVSS score of 9.1. This high score indicates significant risk to organizations, especially those that may not have implemented comprehensive repository management practices. It is crucial for defenders to understand that the default behavior of Maven will change in version 3.8.1 and later, where it will no longer follow HTTP (non-SSL) repository references by default.

In the absence of a repository manager, users may be exposed to risks associated with the legacy behavior of Maven. Organizations that do not mitigate this vulnerability may find themselves vulnerable to attacks that exploit this weakness, allowing unauthorized code execution or data manipulation. As such, it is imperative for organizations using Apache Maven to prioritize patching to avoid potential exploitation.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

Latest CVEs. Recently published vulnerabilities from the NVD database.

View all vulnerabilities
CVE IDSeverity
CVE-2025-65418HIGH
CVE-2025-65417MEDIUM
CVE-2025-65416MEDIUM
CVE-2025-65415MEDIUM
CVE-2025-61314HIGH

Protect Your Business with Hacker-Focused Approach.