CVE-2026-114230
Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-305 |
| Vendor | apache software foundation |
| Product | apache qpid proton c |
| Published | Oct 29, 2026 |
| Last Updated | Oct 29, 2026 |
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Affected Versions
Apache Software Foundation / Apache Qpid Proton C
0 ≤ 0.40.0