What is CVE-2026-5460?

CVE-2026-5460 is a medium-severity vulnerability in Wolfssl, classified under Use After Free. CVSS score: 6.5/10. Published 2026-04-10.

How severe is CVE-2026-5460?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Use After Free in Wolfssl

CVE-2026-5460

A heap use-after-free exists in wolfSSL's TLS 1.3 post-quantum cryptography (PQC) hybrid KeyShare processing. In the error handling path of TLSX_KeyShare_ProcessPqcHybridClient() in src/tls.c, the inner function TLSX_KeyShare_ProcessPqcCli…

Vulnerability class: Use-After-Free

EPSS: 0.001 (16.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Wolfssl — versions 0

Weakness classification (CWE)

CWE-416 — Use After Free

References

facts@wolfssl.com (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-5460?: CVE-2026-5460 is a medium-severity vulnerability in Wolfssl, classified under Use After Free. CVSS score: 6.5/10. Published 2026-04-10.
How severe is CVE-2026-5460?: Medium severity. CVSS v3 base score is 6.5 out of 10.