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  4. CVE 2026 114230 apache qpid proton c potential authentication
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-114230

Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL framesCVE-2026-114230

Answer in brief

CVE-2026-114230 records a Unknown severity vulnerability in Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Qpid Proton C (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 Oct 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. 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/Apache Qpid Proton C (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache Qpid Proton Cgeneric>=0 <=0.40.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Qpid Proton C.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 29, 2026

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

  2. Source modified

    Oct 29, 2026

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

  3. First seen by HOL

    Oct 29, 2026

Sources and claim methodology

  • Source referencelists.apache.org
  • Source referenceopenwall.com
Upstream source description

When dispatching SASL frames to authenticate the peer, Proton will also dispatch AMQP frames if they claim to be SASL frames. This allows authentication bypass. However there will be no user name set so the effects depend on how the application deals with this condition - which otherwise means that authentication has not completed yet. This issue affects Apache Qpid Proton C: through 0.40.0. Users are recommended to upgrade to version 0.41.1, which fixes the issue.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache Qpid Proton C: The OpenSSL TLS implementation adds a locally trusted certificate authority to the existing trusted system trust anchors.Same apache software foundation/apache qpid proton c package
  • Apache Qpid Proton C: Unbounded recursion in parsing AMQP message bodies can lead to crashSame apache software foundation/apache qpid proton c package
  • Apache Qpid Proton C: Verifying non compliant TLS wildcard cert can cause stack buffer overflow readSame apache software foundation/apache qpid proton c package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-305
Source
CVE List V5
Source checked
Oct 29, 2026
References
2 linked sources
Open source record