Template injection in cron-utils

CAO 8.1CVE-2020-26238 · GHSA-pfj3-56hm-jwq5 · Công bố 25/11/2020 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2020-26238 là lỗ hổng mức CAO (CVSS 8.1) ảnh hưởng com.cronutils:cron-utils, cron-utils (cron-utils project).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 4.2%, cao hơn 91.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 9.1.3 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
com.cronutils:cron-utils Maven	`< 9.1.3`	`9.1.3`
cron-utils cron-utils_project	`< 9.1.3`	`9.1.3`

Mô tả

Impact

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.

Patches

The issue was patched and a new version released. Please upgrade to version 9.1.3.

Workarounds

There are no known workarounds up to this moment.

References

A description of the issue is provided in issue 461

For more information

If you have any questions or comments about this advisory:

Open an issue in cron-utils Github repository

Mô tả của NVD

Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.