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  4. CVE 2026 73098 apache juneau unsafe reflection allows attacker
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Back to active CVEs
Critical · CVSS 10.0CVE-2026-73098

Apache Juneau: Unsafe reflection allows attacker-controlled class initialization during parsingCVE-2026-73098

Answer in brief

CVE-2026-73098 records a Critical severity (CVSS 10.0) vulnerability in Apache Juneau: Unsafe reflection allows attacker-controlled class initialization during parsing. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.juneau:juneau-marshall (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/org.apache.juneau:juneau-marshall (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/org.apache.juneau:juneau-marshallgeneric>=0 <9.2.19.2.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/org.apache.juneau:juneau-marshall.
  2. 2Review the reported fix. Update Apache Software Foundation/org.apache.juneau:juneau-marshall to 9.2.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • Source referencelists.apache.org
Upstream source description

Improper control of dynamically-loaded code vulnerability in Apache Juneau. When Apache Juneau parses a value into a property of type java.lang.Class (including parameterized forms), the default class swap loaded the named class with initialization enabled, so input naming a class on the application classpath ran that class's static initializer. The impact depends on the classes present in the deployment. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST request handlingSame apache software foundation/org.apache.juneau package
  • Apache Juneau: Cross-site scripting via unescaped request variables in HTML-doc chromeSame apache software foundation/org.apache.juneau package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-470
Source
CVE List V5
Source checked
Nov 5, 2026
References
1 linked source
Open source record