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High 2 vendors · 2 advisories

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

CVE-2026-114230 key facts

CISA KEV
Not listed (catalogue checked )
Highest advisory rating
High
CVSS base score
7.4 (Red Hat)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · base score 9.8, scored by CISA-ADPAttack vector: network. Attack complexity: low. Privileges required: none. User interaction: none. Scope: unchanged. Confidentiality impact: high. Integrity impact: high. Availability impact: high.
Weakness
  • CWE-305 Authentication bypass by primary weakness
CISA SSVC
Exploitation: none observed. Automatable: yes. Technical impact: total. CISA, .
Fixed releases
  • Apache: 0.41.1
  • Red Hat: 0.41.1
Vendor advisories
2 from Apache, Red Hat
Assigned by
apache (CNA)
CVE record published
Listed by VulniPulse
Record changed

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-114230; each belongs to its advisory, not to every product listed. How records are collected and checked.

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.

Text from the CVE.org record (apache).

How do I fix CVE-2026-114230?

Upgrade to a fixed release named by the vendor:

  • Apache: 0.41.1
  • Red Hat: 0.41.1
  • Users are recommended to upgrade to version 0.41.1, which fixes the issue. (Apache)

Vendor advisories for CVE-2026-114230

Apache

1 advisory
  • Advisory severityUnrated

    Advisory [CVE-2026-114230] Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames

    CVE-2026-114230Source published Source updated

    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.

    Affected products in this advisory
    • Apache Qpid Proton
    Source-reported affected versions
    • Apache Qpid Proton C through 0.40.0
    Source-reported fixed versions
    • 0.41.1
    Mitigation guidance
    • Users are recommended to upgrade to version 0.41.1, which fixes the issue.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory

References

Timeline

  1. CVE record published
  2. First vendor advisory listed by VulniPulse
  3. CVE record last updated

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