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  4. CVE 2026 73095 apache juneau denial of service via unbounded
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High · CVSS 8.7CVE-2026-73095

Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST request handlingCVE-2026-73095

Answer in brief

CVE-2026-73095 records a High severity (CVSS 8.7) vulnerability in Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST request handling. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.juneau:juneau-marshall (generic), Apache Software Foundation/org.apache.juneau:juneau-rest-server (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
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. 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), Apache Software Foundation/org.apache.juneau:juneau-rest-server (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
Apache Software Foundation/org.apache.juneau:juneau-rest-servergeneric>=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, Apache Software Foundation/org.apache.juneau:juneau-rest-server.
  2. 2Review the reported fix. Update Apache Software Foundation/org.apache.juneau:juneau-marshall to 9.2.1; Apache Software Foundation/org.apache.juneau:juneau-rest-server 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

Allocation of Resources Without Limits or Throttling vulnerability in Apache Juneau. The MessagePack parser, which the REST server enables by default, sizes buffers from length values in the input. An unauthenticated client can send a few bytes that force a multi-gigabyte allocation and an OutOfMemoryError, causing denial of service. Related unbounded allocations in REST request handling (multipart uploads and request reader buffers) are fixed at the same time. 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: Unsafe reflection allows attacker-controlled class initialization during parsingSame apache software foundation/org.apache.juneau package
  • Apache Juneau: Sensitive request headers logged in cleartext by the default request logger on server errorsSame apache software foundation/org.apache.juneau package
  • Apache Juneau: Response header CRLF injection and open redirect when applications set headers or redirect targets from request dataSame 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
Missing Auth
EPSS
Not reported
CWE IDs
CWE-770
Source
CVE List V5
Source checked
Nov 5, 2026
References
1 linked source
Open source record