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TI-2021-18411 Aliases CVE-2021-41766GHSA-jh5g-9m4v-9vv9

Insecure Java Deserialization in Apache Karaf

Priority LOW 39CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 6 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-502.

Summary

Apache Karaf allows monitoring of applications and the Java runtime by using the Java Management Extensions (JMX). JMX is a Java RMI based technology that relies on Java serialized objects for client server communication. Whereas the default JMX implementation is hardened against unauthenticated deserialization attacks, the implementation used by Apache Karaf is not protected against this kind of attack. The impact of Java deserialization vulnerabilities strongly depends on the classes that are available within the targets class path. Generally speaking, deserialization of untrusted data does always represent a high security risk and should be prevented. The risk is low as, by default, Karaf uses a limited set of classes in the JMX server class path. It depends of system scoped classes (e.g. jar in the lib folder).

Why it matters now

EPSS 0.02033 81st percentileScored 2026-11-07
Fix Partial Apache Karaf (Apache Software Foundation): 4.3.6org.apache.karaf.management:org.apache.karaf.management.server (Maven): 4.3.6Red Hat: 1 advisoryRed Hat: 1 fixed, 6 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache KarafApache Karaf to before 4.3.64.3.6Patch availableCNA
—org.apache.karaf.management:org.apache.karaf.management.server (Maven)before 4.3.64.3.6Patch availableGHSA-jh5g-9m4v-9vv9
  • Apache Karaf VendorApache Affected Apache Karaf to before 4.3.6 Fixed in 4.3.6 Patch available CNA
  • org.apache.karaf.management:org.apache.karaf.management.server (Maven) Vendor— Affected before 4.3.6 Fixed in 4.3.6 Patch available GHSA-jh5g-9m4v-9vv9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:karaf:*:*:*:*:*:*:*:*before 4.3.6VulnerableApache
  • cpe:2.3:a:apache:karaf:*:*:*:*:*:*:*:* Versions before 4.3.6 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Karaf (Apache Software Foundation) Fixed in 4.3.6
  • Fix · GHSA-jh5g-9m4v-9vv9 org.apache.karaf.management:org.apache.karaf.management.server (Maven) Fixed in 4.3.6 Advisory →

Red Hat 1 advisory

  • RHSA-2022:5532 Released 2022-07-07 · Red Hat rating Important
    Red Hat Fuse 7.11.0 release and security update
    • Red Hat Fuse 7.11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat BPM Suite 6AffectedNo fix planned: Out of support scope
Red Hat JBoss A-MQ 6AffectedNo fix planned: Out of support scope
Red Hat JBoss BRMS 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Data Grid 7AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse Service Works 6AffectedNo fix planned: Out of support scope
Red Hat Fuse 7.11Fixed RHSA-2022:5532
Not affected: 4 products
  • Red Hat Decision Manager 7
  • Red Hat Integration Camel K 1
  • Red Hat Integration Camel Quarkus 1
  • Red Hat Process Automation 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41766
  2. 2026-10-03 Alias added: GHSA-jh5g-9m4v-9vv9

References

Advisory 2

Other 6

  • TI-2022-19035 Apache Karaf: JDBC JAAS LDAP injection CVSS 3.1CRITICAL 9.8
  • TI-2018-08445 XML external entity injection in Apache Karaf CVSS 3.0CRITICAL 9.8
  • TI-2026-61863 Missing authorization in Apache Karaf CVSS 3.1CRITICAL 9.8
  • TI-2026-61851 Apache Karaf: Path Traversal in Config Service Allows Manager-to-Admin Privilege Escalation CVSS 3.1CRITICAL 9.8
  • TI-2020-17076 An issue was discovered in Legion of the Bouncy Castle BC Java 1.65 and 1.66. CVSS 3.1HIGH 8.1
  • TI-2026-61846 Apache Karaf: OS Command Injection in Child-Instance Launch (instance:* / InstancesMBean) CVSS 3.1HIGH 8.8
See all 17 →

Sources

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