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ubuntu логотип

CVE-2026-56821

около 2 месяцев назад

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 7.4
EPSS: Низкий
redhat логотип

CVE-2026-56821

2 месяца назад

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 5.7
EPSS: Низкий
nvd логотип

CVE-2026-56821

около 2 месяцев назад

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 7.4
EPSS: Низкий
debian логотип

CVE-2026-56821

около 2 месяцев назад

Netty is an asynchronous, event-driven network application framework. ...

CVSS3: 7.4
EPSS: Низкий
github логотип

GHSA-g7hg-vrcf-mvmr

около 2 месяцев назад

Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator

CVSS3: 7.4
EPSS: Низкий
suse-cvrf логотип

SUSE-SU-2026:3482-1

около 2 месяцев назад

Security update for netty, netty-tcnative

EPSS: Низкий

Уязвимостей на страницу

Уязвимость
CVSS
EPSS
Опубликовано
ubuntu логотип
CVE-2026-56821

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 7.4
0%
Низкий
около 2 месяцев назад
redhat логотип
CVE-2026-56821

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 5.7
0%
Низкий
2 месяца назад
nvd логотип
CVE-2026-56821

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS3: 7.4
0%
Низкий
около 2 месяцев назад
debian логотип
CVE-2026-56821

Netty is an asynchronous, event-driven network application framework. ...

CVSS3: 7.4
0%
Низкий
около 2 месяцев назад
github логотип
GHSA-g7hg-vrcf-mvmr

Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator

CVSS3: 7.4
0%
Низкий
около 2 месяцев назад
suse-cvrf логотип
SUSE-SU-2026:3482-1

Security update for netty, netty-tcnative

около 2 месяцев назад

Уязвимостей на страницу