CVE-2021-26291

What it is

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

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering.

Exploit odds

8.7% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-04-23 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:43 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 8.7% in the next 30 days (EPSS).
• Severity: 9.1 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-04-23 15:15 UTC

Last modified

2026-06-17 03:43 UTC

Exploit probability

8.7% · EPSS, next 30 days

Weakness

CWE-346

Record status

Modified

Affected

• Apache Maven < 3.8.1
• Quarkus < 1.13.5
• Oracle Financial Services Analytical Applications Infrastructure ≤ 8.0.9.0.0
• Oracle Financial Services Analytical Applications Infrastructure ≤ 8.1.2.0
• Oracle Goldengate Big Data And Application Adapters 23.1

Attack profile CVSS 3.1 · 9.1

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-26291.md and follow it. Check whether this project is affected by CVE-2021-26291. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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