Vulnerability in Netty
CVE-2026-56822
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation com…
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Netty — versions >= 4.2.0.Final, < 4.2.16.Final, >=4.2.0.Final, < 4.2.16.Final, < 4.1.136.Final
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-56822?
- CVE-2026-56822 is a high-severity vulnerability in Netty, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.4/10. Published 2026-07-29.
- How severe is CVE-2026-56822?
- High severity. CVSS v3 base score is 7.4 out of 10.