CVE-2026-7531

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Source
https://cve.org/CVERecord?id=CVE-2026-7531
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7531.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-7531
Downstream
Published
2026-06-25T20:01:16.991Z
Modified
2026-07-16T03:48:47.651757786Z
Severity
  • 2.3 (Low) CVSS_V4 - 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 CVSS Calculator
Summary
Use-after-free in PQC hybrid key-share handling
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7531.json",
    "cwe_ids": [
        "CWE-416"
    ],
    "cna_assigner": "wolfSSL"
}
References

Affected packages

Git / github.com/wolfssl/wolfssl

Affected ranges

Type
GIT
Repo
https://github.com/wolfssl/wolfssl
Events
Introduced
b077c81eb635392e694ccedbab8b644297ec0285
Fixed
ac01707f552c611fbd135cc723b2682b3e7f80f2
Database specific 
{
    "cpe": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "extracted_events": [
        {
            "introduced": "5.8.0"
        },
        {
            "last_affected": "5.9.1"
        },
        {
            "fixed": "5.9.2"
        }
    ]
}

Affected versions

v5.*
v5.8.0-stable
v5.8.2-stable
v5.8.4-stable
v5.9.0-stable
v5.9.1-stable
Other
wolfEntropy2d

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7531.json"