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CVE-2021-41269

10.0 · CRITICAL

cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them.

Published Nov 15, 2021CWE-94EPSS 4.35%

Overview

CVE-2021-41269 is a critical-severity vulnerability. It was published on November 15, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them. In affected versions A template Injection was identified in cron-utils enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Versions up to 9.1.2 are susceptible to this vulnerability. Please note, that only projects using the @Cron annotation to validate untrusted Cron expressions are affected. The issue was patched and a new version was released. Please upgrade to version 9.1.6. There are no known workarounds known.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899daGitHubgithub.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9daGitHubgithub.com/jmrozanec/cron-utils/issues/461GitHubgithub.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87GitHubgithub.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899daGitHubgithub.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9daGitHubgithub.com/jmrozanec/cron-utils/issues/461GitHubgithub.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41269?

CVE-2021-41269 is a critical-severity vulnerability. It was published on November 15, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2021-41269?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-41269?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-41269?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41269 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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