CVE-2026-7531

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/10327	Issue Tracking Patch
https://www.wolfssl.com/docs/security-vulnerabilities/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

History

26 Jun 2026, 16:53

Type	Values Removed	Values Added
References	~~() https://github.com/wolfSSL/wolfssl/pull/10327 -~~	() https://github.com/wolfSSL/wolfssl/pull/10327 - Issue Tracking, Patch
References	~~() https://www.wolfssl.com/docs/security-vulnerabilities/ -~~	() https://www.wolfssl.com/docs/security-vulnerabilities/ - Vendor Advisory
First Time		Wolfssl wolfssl Wolfssl
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
CPE		cpe:2.3:a:wolfssl:wolfssl::::::::

25 Jun 2026, 20:22

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-25 20:17

Updated : 2026-06-26 16:53

NVD link : CVE-2026-7531

Mitre link : CVE-2026-7531

CVE.ORG link : CVE-2026-7531

JSON object : View

Products Affected

wolfssl

wolfssl

CWE

CWE-416

Use After Free

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