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CRITICAL

CVE-2021-41269

CVSS v3

9.8

CRITICAL

EPSS Score

4.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • com.cronutils:cron-utilsMavenall versions · fixed in 9.1.6

Vendor advisories

  • CVE-2021-41269 Red Hat Product Security3 products fixed · 1 known affected

    cron-utils: template Injection leading to unauthenticated Remote Code Execution

    cron-utils as a component of Red Hat Integration Camel Quarkus 1

  • RHSA-2022:6835 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Service Registry (container images) release and security update [2.3.0.GA]

  • RHSA-2022:1013 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Integration Camel Extensions for Quarkus 2.2.1 security update

  • RHSA-2022:0589 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat build of Quarkus 2.2.5 release and security update

Full record on NVD

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.

Technical details

Published
2021-11-15

Frequently asked questions

What is CVE-2021-41269?

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.

Is CVE-2021-41269 actively exploited?

Active exploitation of CVE-2021-41269 has not been confirmed. Its EPSS score was 4.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-41269?

CVE-2021-41269 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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