Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.
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History
Tue, 07 Apr 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1. | |
| Title | Botan has a TLS 1.3 certificate authentication bypass | |
| Weaknesses | CWE-841 | |
| References |
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| Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-07T21:13:49.281Z
Reserved: 2026-03-30T16:56:30.999Z
Link: CVE-2026-34582
Vulnrichment
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NVD
Status : Received
Published: 2026-04-07T22:16:22.810
Modified: 2026-04-07T22:16:22.810
Link: CVE-2026-34582
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Weaknesses