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CVE-2020-26238

27
FAUCET Score

CVE-2020-26238 is a template injection vulnerability in the cron-utils Java library, affecting versions prior to 9.1.3, specifically when projects use the @Cron annotation for untrusted input. This critical flaw allows unauthenticated remote code execution (RCE) due to the injection of arbitrary Java EL expressions, carrying a CVSS score of 8.1 (HIGH). While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.1.3CPE matchmatch criteria
cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.9HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.5
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.20%
Probability of exploitation in next 30 days
EPSS Percentile
89.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0420 is in the 54th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: com.cronutils:cron-utilsFixed in: 9.1.3
redhatpatch availablevia redhat_api
Product: Red Hat Integration
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Integration Camel Quarkus 2
View patch
redhatpatch availablevia redhat_api
Product: Text-Only RHOARFixed in: cron-utils
View patch
redhatno patchvia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: cron-utils
redhatno patchvia redhat_api
Product: Red Hat Integration Camel Quarkus 1Fixed in: cron-utils

Vendor Advisories (2)

mavenGHSA-pfj3-56hm-jwq5critical

Template injection in cron-utils

Nov 24, 2020
redhatCVE-2020-26238Important

cron-utils: template injection allows attackers to inject arbitrary Java EL expressions leading to remote code execution

Nov 24, 2020

References

github.com / jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e
PatchThird Party Advisory
github.com / jmrozanec/cron-utils/issues/461
ExploitIssue TrackingThird Party Advisory
github.com / jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5
ExploitThird Party Advisory
lists.apache.org / thread.html/r390bb7630b7ea8f02bf7adbbe69c0ae8b562c527d663c543d965f959%40%3Cgitbox.hive.apache.org%3E
lists.apache.org / thread.html/r432a69a1a85cbcb1f1bad2aa0fbfce0367bf894bf917f6ed7118e7f0%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r50e1b5544c37e408ed7e9a958b28237b1cb9660ba2b3dba46f343e23%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r5f601d15292e3302ad0ae0e89527029546945b1cd5837af7e838d354%40%3Cdev.hive.apache.org%3E
lists.apache.org / thread.html/r71083c759dc627f198571b3d48b6745fe798b1d53c34f7ef8de9e7dd%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r737406bc17d49ffe8fe6a8828d390ee0a02e45e5a5b4f931180b9a93%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r855aead591697dc2e85faf66c99036e49f492431940b78d4e6d895b5%40%3Cgitbox.hive.apache.org%3E
lists.apache.org / thread.html/r96937fc9c82f3201b59311c067e97bce71123944f93102169a95bf5c%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r9ae9a9fb1c8e2bf95c676e7e4cd06aa04f0a3a8a9ec1a6b787afb00f%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/ra9e81244d323898dde3c979dd7df6996e4037d14a01b6629ea443548%40%3Cissues.hive.apache.org%3E