CLSA-2026-1779355613 Fix CVE(s): CVE-2026-3833

SECURITY UPDATE: nameConstraints case-sensitive comparison bypass - debian/patches/CVE-2026-3833.patch: perform case-insensitive comparison of dNSName and rfc822Name domain labels in X.509 nameConstraints processing, fixing excludedSubtrees / permittedSubtrees bypass via letter-casing in the SAN....

crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

User Impersonation

Overview symfony/security-http is a provides an infrastructure for sophisticated authorization systems, which makes it possible to easily separate the actual authorization logic from so called user providers that hold the users credentials. Affected versions of this package are vulnerable to User...

Astra Linux – Vulnerability in curl

There is a vulnerability in the handling of certificate validation in curl v8.1.0, particularly in how wildcard patterns are matched when listed as “Subject Alternative Name” in TLS server certificates. Curls can be modified to use its own name matching function for TLS, rather than the one...

Astra Linux – Vulnerability in Thunderbird

The encrypted subject of an email message may be incorrectly and permanently assigned to another arbitrary email message in Thunderbird’s local cache. As a result, when replying to the contaminated email message, the user may accidentally expose the confidential subject to a third party. While th...

crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

CVE-2026-42541

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions which isn't the default can craft a policy that makes use of the cani host callback. The callback issues a SubjectAccessReview SAR requests to enumerate...

CVE-2026-42541

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions which isn't the default can craft a policy that makes use of the cani host callback. The callback issues a SubjectAccessReview SAR requests to enumerate...

CVE-2026-42541

CVE-2026-42541 (Kubewarden RBAC Reconnaissance) : Affected Kubewarden versions allow an attacker with privileged AdmissionPolicy/AdmissionPolicyGroup create permissions to abuse the can_i host callback, which forwards a SubjectAccessReview (SAR) to the policy-server with elevated privileges. This...

CVE-2026-42541 Kubewarden: RBAC Reconnaissance via unchecked can_i host capability call

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions which isn't the default can craft a policy that makes use of the cani host callback. The callback issues a SubjectAccessReview SAR requests to enumerate...

CVE-2026-42541 Kubewarden: RBAC Reconnaissance via unchecked can_i host capability call

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions which isn't the default can craft a policy that makes use of the cani host callback. The callback issues a SubjectAccessReview SAR requests to enumerate...

CVE-2026-42541 Kubewarden: RBAC Reconnaissance via unchecked can_i host capability call

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions which isn't the default can craft a policy that makes use of the cani host callback. The callback issues a SubjectAccessReview SAR requests to enumerate...

CVE-2026-44742

A flaw was found in Postorius. This vulnerability allows an attacker to embed malicious code within the subject of an email message. When an administrator or user views the 'Held messages pop-up', this malicious code is executed in their web browser. This can lead to Cross-Site Scripting XSS,...

FreeBSD : postorius -- XSS (5b3b7f60-4de9-11f1-873e-0f64d023d0c7)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 5b3b7f60-4de9-11f1-873e-0f64d023d0c7 advisory. NIST reports: Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in...

SUSE kubewarden 安全漏洞

SUSE kubewarden is a policy engine developed by the German company SUSE. SUSE kubewarden has security vulnerabilities. These vulnerabilities stem from attackers who have privileges as AdmissionPolicy or AdmissionPolicyGroup and can exploit the canihost callback. This callback directly executes...

SUSE CVE-2026-44742

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: golang (UTSA-2026-016811)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016811 advisory. An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes...

GHSA-R7C9-7PJQ-HMM8 Postorius is vulnerable to XSS

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

EUVD-2026-28415

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

Cross-site Scripting (XSS)

Overview postorius is an A web user interface for GNU Mailman Affected versions of this package are vulnerable to Cross-site Scripting XSS via the rendering process of the message subject in the Held messages pop-up. An attacker can execute arbitrary scripts in the context of the user's browser b...