CVE-2026-3230
LOWImproper key_share validation in TLS 1.3 HelloRetryRequest
Title source: cnaDescription
Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in derivation of predictable traffic secrets from (EC)DHE shared secret. This issue does not affect the client's authentication of the server during TLS handshakes.
References (1)
Scores
CVSS v3
2.7
EPSS
0.0007
EPSS Percentile
21.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Details
CWE
CWE-20
Status
published
Products (2)
wolfSSL/wolfSSL
< 5.9.0
wolfssl/wolfssl
< 5.9.0
Published
Mar 19, 2026
Tracked Since
Mar 20, 2026