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Critical severity9.8OSV Advisory· Published Jun 25, 2026· Updated Jun 26, 2026

CVE-2026-7531

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.

Affected products

3
  • WolfSSL/WolfsslOSV3 versions
    v5.9.1-stable, v5.9.0-stable, v5.8.4-stable, …+ 2 more
    • (no CPE)range: v5.9.1-stable, v5.9.0-stable, v5.8.4-stable, …
    • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*range: >=5.8.0,<5.9.2
    • (no CPE)range: <5.9.1

Patches

Vulnerability mechanics

References

2

News mentions

0

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