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.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| botan3 | — | 3.11.1-r0 |
References
Similar Threats
- Unknown DEBIAN-CVE-2026-44378
- Unknown ALPINE-CVE-2026-34580
- Unknown DEBIAN-CVE-2026-34582
- Unknown UBUNTU-CVE-2026-34580
- Unknown UBUNTU-CVE-2026-34582
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