What is GHSA-w9rp-wwm2-fwmr?

GHSA-w9rp-wwm2-fwmr is a security advisory published by GitHub Security Advisories with Low severity. Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026...

Which CVE IDs does GHSA-w9rp-wwm2-fwmr cover?

GHSA-w9rp-wwm2-fwmr covers the following CVE IDs: CVE-2026-7531. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w9rp-wwm2-fwmr?

GHSA-w9rp-wwm2-fwmr has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-w9rp-wwm2-fwmrLowCVSS 9.8

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026...

Vendor

GitHub Security Advisories

Published

June 25, 2026

Last Modified

June 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-7531 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-7531
https://github.com/wolfSSL/wolfssl/pull/10327
https://www.wolfssl.com/docs/security-vulnerabilities
https://github.com/advisories/GHSA-w9rp-wwm2-fwmr