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TI-2021-18101 Aliases CVE-2021-41269GHSA-p9m8-27x8-rg87

Unauthenticated remote code injection in cron-utils

Priority MEDIUM 50CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-94.

Summary

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.

Why it matters now

EPSS 0.04349 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial cron-utils (jmrozanec): 9.1.6com.cronutils:cron-utils (Maven): 9.1.6Red Hat: 3 advisoriesRed Hat: 3 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
jmrozaneccron-utilsbefore 9.1.69.1.6Patch availableCNA
—com.cronutils:cron-utils (Maven)before 9.1.69.1.6Patch availableGHSA-p9m8-27x8-rg87
  • cron-utils Vendorjmrozanec Affected before 9.1.6 Fixed in 9.1.6 Patch available CNA
  • com.cronutils:cron-utils (Maven) Vendor— Affected before 9.1.6 Fixed in 9.1.6 Patch available GHSA-p9m8-27x8-rg87

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:*before 9.1.6VulnerableCron-utils Project
  • cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:* Versions before 9.1.6 Vulnerable ·Cron-utils Project

Remediation

  • Fix · CNA cron-utils (jmrozanec) Fixed in 9.1.6
  • Fix · GHSA-p9m8-27x8-rg87 com.cronutils:cron-utils (Maven) Fixed in 9.1.6 Advisory →

Red Hat 3 advisories

  • RHSA-2022:6835 Released 2022-10-06 · Red Hat rating Important
    Service Registry (container images) release and security update [2.3.0.GA]
    • RHINT Service Registry 2.3.0 GA
  • RHSA-2022:1013 Released 2022-03-22 · Red Hat rating Moderate
    Red Hat Integration Camel Extensions for Quarkus 2.2.1 security update
    • RHINT Camel-Q 2.2.1
  • RHSA-2022:0589 Released 2022-02-21 · Red Hat rating Moderate
    Red Hat build of Quarkus 2.2.5 release and security update
    • Red Hat build of Quarkus 2.2.5

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Integration Camel Quarkus 1AffectedNo fix yet
RHINT Camel-Q 2.2.1Fixed RHSA-2022:1013
RHINT Service Registry 2.3.0 GAFixed RHSA-2022:6835
Red Hat build of Quarkus 2.2.5Fixed RHSA-2022:0589
Not affected: 1 product
  • Red Hat Integration Camel K 1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41269
  2. 2026-10-03 Alias added: GHSA-p9m8-27x8-rg87

References

Exploit 1

Patch 2

Advisory 2

Other 1

  • TI-2020-16059 Critical vulnerability found in cron-utils CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences