Improper Certificate Validation

io.netty, netty-handler-ssl-ocsp is vulnerable to Improper Certificate Validation. The vulnerability is due to OcspClient failing to validate that the CertificateID in an OCSP response matches the requested CertificateID, which allows an attacker to replay a legitimately signed GOOD OCSP response...

etcd: etcd: Authentication bypass due to improper Certificate Revocation List enforcement on gRPC listener

A flaw was found in etcd, a distributed key-value store. When etcd is configured to use separate listeners for HTTP and gRPC client endpoints, the Certificate Revocation List CRL is not properly enforced on the gRPC listener. This oversight allows a client with a revoked certificate to successful...

Oracle Linux 10 : tomcat9 (ELSA-2026-25341)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-25341 advisory. - Resolves: RHEL-150720 Tomcat: Certificate revocation bypass due to improper OCSP response validation CVE-2026-24734 - Resolves: Tomcat: OCSP checks sometime...

tomcat9 update

1:9.0.117-2 - Resolves: RHEL-185571 Remove tomcat clustering JAR from RPM builds 1:9.0.117-1 - Resolves: RHEL-150720 Tomcat: Certificate revocation bypass due to improper OCSP response validation CVE-2026-24734 - Resolves: Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is...

Netty: TOCTOU in OcspServerCertificateValidator

Summary Netty's OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation completes. This allows the client's downstream handlers to send sensitive application data e.g., HTTP requests to a revoked server before the channel is closed by the OC...

GHSA-WC96-39FC-566F Netty: TOCTOU in OcspServerCertificateValidator

Summary Netty's OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation completes. This allows the client's downstream handlers to send sensitive application data e.g., HTTP requests to a revoked server before the channel is closed by the OC...

Improper Check for Certificate Revocation

Overview io.netty:netty-handler-ssl-ocsp is a Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. Affected versions of this package are vulnerable to Improper Check for Certificate Revocation in t...

rustls-webpki: rustls-webpki: Denial of Service via crafted Certificate Revocation List

A flaw was found in rustls-webpki. A remote attacker, by influencing an application to parse a specially crafted Certificate Revocation List CRL that contains an empty onlySomeReasons value in its issuingDistributionPoint extension, could trigger a panic. This vulnerability leads to a denial of...

tomcat9 security update

1:9.0.117-2 - Resolves: RHEL-185571 Remove tomcat clustering JAR from RPM builds 1:9.0.117-1 - Resolves: RHEL-150720 Tomcat: Certificate revocation bypass due to improper OCSP response validation CVE-2026-24734 - Resolves: Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is...

Oracle Linux 10 : tomcat9 (ELSA-2026-36790)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-36790 advisory. - Resolves: RHEL-150720 Tomcat: Certificate revocation bypass due to improper OCSP response validation CVE-2026-24734 - Resolves: Tomcat: OCSP checks...

EulerOS Virtualization 2.12.1 (EulerOS-SA-2026-2759)

According to the versions of the package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the...

EulerOS Virtualization 2.10.0 : shim (EulerOS-SA-2026-2869)

According to the versions of the shim package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if...

Medium: tomcat10

Issue Overview: Improper Neutralization of Script-Related HTML Tags in a Web Page Basic XSS vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0...

Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2026-1945)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1945 advisory. Improper Neutralization of Script-Related HTML Tags in a Web Page Basic XSS vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 throug...

The vulnerability of the Certificate Revocation List (CRL) function in Rockwell Automation’s programmable logic controllers ControlLogix 5580, GuardLogix 5580, CompactLogix 5380, and Compact GuardLogix 5380 allows a intruder to circumvent security restrictions.

The vulnerability of the Certificate Revocation List CRL function in Rockwell Automation’s programmable logic controllers ControlLogix 5580, GuardLogix 5580, CompactLogix 5380, and Compact GuardLogix 5380 is related to improper verification of certificate revocation. Exploiting this vulnerability...

GO-2026-5986 nebula-mesh: Certificate revocation is never enforced at the mesh in github.com/forgekeep/nebula-mesh

nebula-mesh: Certificate revocation is never enforced at the mesh in github.com/forgekeep/nebula-mesh...

Amazon Linux 2023 : aws-nitro-tpm-tools (ALAS2023-2026-1905)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1905 advisory. A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate...

Oracle Linux 10 : tomcat (ELSA-2026-19054)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-19054 advisory. - Resolves: RHEL-150719 Certificate revocation bypass due to improper OCSP response validation CVE-2026-24734 - Resolves: RHEL-124493 tomcat: Directory...

JLSEC-2026-707 Two buffer overflow vulnerabilities existed in the wolfSSL CRL parser when parsing CRL numbers: a...

Two buffer overflow vulnerabilities existed in the wolfSSL CRL parser when parsing CRL numbers: a heap-based buffer overflow could occur when improperly storing the CRL number as a hexadecimal string, and a stack-based overflow for sufficiently sized CRL numbers. With appropriately crafted CRLs,...

nebula-mesh: Certificate revocation is never enforced at the mesh

Summary nebula-mesh revokes a host by adding its certificate fingerprint to a per-CA blocklist and shipping that list to every other agent on each poll. Slack's Nebula enforces certificate revocation ONLY through the pki.blocklist list in config.yml no CRL/OCSP. The project's own code states this...