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.
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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 29 Oct 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Apache
Apache qpid Proton-c |
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| Vendors & Products |
Apache
Apache qpid Proton-c |
Thu, 29 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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Thu, 29 Oct 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames | |
| Weaknesses | CWE-305 | |
| References |
|
Projects
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-10-29T11:09:06.927Z
Reserved: 2026-10-21T05:27:42.658Z
Link: CVE-2026-114230
No data.
Status : Deferred
Published: 2026-10-29T11:17:28.210
Modified: 2026-10-29T15:43:33.310
Link: CVE-2026-114230
No data.
OpenCVE Enrichment
Updated: 2026-10-29T12:29:12Z
Weaknesses