CVE-2026-89136

8.3 highEPSS 0.4%

When using RPK (Raw Public Key), the client side of a TLS 1.2, 1.3 and DTLS 1.2 connection could accept an unsolicited server_cert_type=RawPublicKey which allowed a malicious or misbehaving server to bypass authentication. RPK is off by default and only enabled in --enable-rpk OR --enable-all OR --enable-distro AKA HAVE_RPK builds.

Severity

CVSS 4.0

8.3 high

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2026-09-27
Modified: 2026-09-29
Record from: the NVD, synced 2026-10-19

References

https://github.com/wolfSSL/wolfssl/pull/11009

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