Use-after-free in PQC hybrid key-share handling_CVE-2026-7531

2.3 / 10

LOW

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

Description

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 (released in 5.9.1): a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory.

Basic Information

ID CVE-2026-7531

Source wolfSSL

Published Jun 25, 2026 at 20:01

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 5.8.0

Affected Versions wolfSSL wolfSSL 5.8.0

CWE Classification

CWE-416

References

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    "lastseen": "",
    "description": "Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 (released in 5.9.1): a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory.",
    "published": "2026-06-25T20:01:16.991Z",
    "modified": "2026-06-25T20:01:16.991Z",
    "type": "cve",
    "title": "Use-after-free in PQC hybrid key-share handling",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl/pull/10327\nhttps://www.wolfssl.com/docs/security-vulnerabilities/",
    "id": "CVE-2026-7531",
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    "cvss": {
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