Red Hat Lightwell has released io.netty:netty-handler-ssl-ocsp 4.1.100.Final-rhlw-00001 with backported fixes for CVE-2026-56820, CVE-2026-56821, and CVE-2026-56822.
CVE-2026-56820: Netty: Missing CertificateID Validation in OCSP Response Allows Replay Attacks
CVE-2026-56821: Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator
CVE-2026-56822: Netty: TOCTOU in OcspServerCertificateValidator
This patched artifact is a drop-in replacement for io.netty:netty-handler-ssl-ocsp 4.1.100.Final from Maven Central.
{
"backport_base_version": "4.1.100.Final",
"remediated_version": "4.1.100.Final-rhlw-00001",
"repository_url": "https://packages.redhat.com/lightwell/java/remediated/"
}
"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-7e27d228834c9346.json"