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CVE-2021-41411

29
FAUCET Score

CVE-2021-41411 is a critical XML External Entity (XXE) vulnerability affecting Red Hat Drools versions 7.59.x and earlier, specifically within the KieModuleMarshaller.java component due to improper use of the Validator class. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating it can be exploited remotely without authentication or user interaction, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, 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
< 7.6.0CPE matchmatch criteria
cpe:2.3:a:redhat:drools:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 51st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.drools:drools-coreFixed in: 7.60.0.Final

Vendor Advisories (2)

mavenGHSA-rc57-9r3x-98cqcritical

XML External Entity Reference in drools

Jun 17, 2022
redhatCVE-2021-41411Important

drools-compiler: XML External Entity vulnerability in KieModuleMarshaller.java

Aug 30, 2021

References

github.com / kiegroup/drools/pull/3808
PatchThird Party Advisory