CRITICAL

CVE-2021-26291

CVSS v3

9.1

CRITICAL

EPSS Score

44.3%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

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

Technical details

Published
4/23/2021

Frequently asked questions

What is CVE-2021-26291?

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

Is CVE-2021-26291 actively exploited?

Active exploitation of CVE-2021-26291 has not been confirmed. The EPSS score is 44.3%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26291?

CVE-2021-26291 has a CVSS v3 base score of 9.1 (CRITICAL severity).

Is CVE-2021-26291 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.