CVE-2020-26238

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering.

Exploit odds

4.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-11-25 00:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:07 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.2% in the next 30 days (EPSS).
• Severity: 7.9 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-11-25 00:15 UTC

Last modified

2026-06-17 03:07 UTC

Exploit probability

4.2% · EPSS, next 30 days

Weakness

CWE-74

Record status

Modified

Affected

• cron-utils Project cron-utils < 9.1.3

Attack profile CVSS 3.1 · 7.9

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-26238.md and follow it. Check whether this project is affected by CVE-2020-26238. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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