PT-2026-63259 · Netty · Netty

CVE-2026-56820 · Publicado 2026-07-21 · Atualizado 2026-07-21

Mitre

CVSS v3.1

7.4

Alta

Vetor base

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and prior to 4.1.135.Final, OcspClient does not validate that the CertificateID in an OCSP response matches the requested CertificateID, which can lead to replay attack. OcspClient.validateResponse accepts a legitimately signed GOOD status response for an unrelated certificate issued by the same CA, allowing bypass of revocation checks for another certificate. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Correção

Improper Certificate Validation

Enumeração de Fraquezas

CWE-295

Identificadores relacionados

CVE-2026-56820

Produtos afetados

Netty

Referências · 6

• https://github.com/netty/netty/security/advisories/GHSA-272m-gcwp-mpwg · Nota
• https://github.com/netty/netty/releases/tag/netty-4.1.136.Final · Nota
• https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6 · Nota
• https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b · Nota
• https://github.com/netty/netty/releases/tag/netty-4.2.16.Final · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-56820 · Nota de Segurança