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  4. CVE 2026 73100 apache juneau sensitive request headers logged in
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Back to active CVEs
Critical · CVSS 10.0CVE-2026-73100

Apache Juneau: Sensitive request headers logged in cleartext by the default request logger on server errorsCVE-2026-73100

Answer in brief

CVE-2026-73100 records a Critical severity (CVSS 10.0) vulnerability in Apache Juneau: Sensitive request headers logged in cleartext by the default request logger on server errors. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.juneau:juneau-rest-common (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
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
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-rest-common (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-rest-commongeneric>=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-rest-common, Apache Software Foundation/org.apache.juneau:juneau-rest-server.
  2. 2Review the reported fix. Update Apache Software Foundation/org.apache.juneau:juneau-rest-common 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

Insertion of Sensitive Information into Log File vulnerability in Apache Juneau. The default REST server call logger records request headers for requests that end in a server error, without redacting them. Any client able to cause a server error gets headers such as Authorization, Cookie, Proxy-Authorization and X-API-Key written in cleartext to the application log, exposing them to anyone who can read the logs. 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: REST client forwards credentials to a different origin when following HTTP redirectsSame 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

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-532
Source
CVE List V5
Source checked
Nov 5, 2026
References
1 linked source
Open source record