CVE-2026-39984

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

CLEANSTART-2026-FB07695 When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint

Multiple security vulnerabilities affect the velero-fips package. When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. See references for individual vulnerability...

CLEANSTART-2026-QO20135 When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint

Multiple security vulnerabilities affect the minio-operator-fips package. When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. See references for individual...

CLEANSTART-2026-BZ28794 Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service

Multiple security vulnerabilities affect the aws-load-balancer-controller package. Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. See references for...

Cisco Webex Services 安全漏洞

Cisco Webex Services are a series of online collaboration services provided by the American company Cisco. There is a security vulnerability in Cisco Webex Services, which stems from improper certificate verification. This vulnerability could allow unverified remote attackers to impersonate any...

PT-2026-33093

Name of the Vulnerable Software and Affected Versions Cisco Webex Meetings versions 39.6 through 45.4 Description An issue in the integration of single sign-on SSO with Control Hub in Cisco Webex Services allows an unauthenticated, remote attacker to impersonate any user within the service. This...

SUSE SLED15 / SLES15 Security Update : go1.25 (SUSE-SU-2026:1321-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1321-1 advisory. - Update to go1.25.9 bsc1244485. - CVE-2026-27140: cmd/go: trust layer bypass when using cgo and SWIG...

Understanding Student Experiences with TLS Client Authentication

Mutual TLS mTLS provides strong, certificate-based authentication for both clients and servers, yet its adoption for user-facing websites remains rare. This paper presents a longitudinal study of mTLS usability, tracking 46 senior and graduate computer science students who configured client...

Amazon Athena ODBC Driver < 2.1.0.0 Multiple Vulnerabilities

The version of Amazon Athena ODBC Driver installed on the remote host is prior to 2.1.0.0. It is, therefore, affected by multiple vulnerabilities, including: - Improper neutralization of special elements in the authentication components might allow a threat actor to execute arbitrary code or...

CVE-2026-39984

CVE-2026-39984 – Sigstore Timestamp Authority (tsa/timestamp-authority/v2/pkg/verification) : Versions 2.0.5 and earlier contain an authorization bypass in VerifyTimestampResponse. The code validates the certificate chain correctly but applies TSA-specific constraints using the first non-CA certi...

CVE-2026-39984 Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

CVE-2026-39984

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the VerifyTimestampResponse function when a forged certificate is prepended to the certificate bag. An attacker can bypass authorization checks by supplying a payload where the signature is validated...

CVE-2026-39984 Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the VerifyTimestampResponse function when a forged certificate is prepended to the certificate bag. An attacker can bypass authorization checks by supplying a payload where the signature is validated...

CVE-2026-39984 Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

CVE-2026-39984

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signature, but the TSA-specific constraint...

OpenTofu has unbounded memory usage, high CPU usage, or deadlock in "tofu init" with maliciously-crafted dependency responses

Impact Unauthenticated denial of service. Summary When installing module packages from attacker-controlled sources, tofu init may use unbounded memory, cause high CPU usage, or deadlock when encountering maliciously-crafted TLS certificate chains or tar archives. Those who depend on modules or...

SUSE CVE-2026-40097

Step CA is an online certificate authority for secure, automated certificate management for DevOps. From 0.24.0 to before 0.30.0-rc3, an attacker can trigger an index out-of-bounds panic in Step CA by sending a crafted attestation key AK certificate with an empty Extended Key Usage EKU extension...

GHSA-7JRQ-Q4PQ-RHM6 Oxia's TLS CA certificate chain validation fails with multi-certificate PEM bundles

Summary The trustedCertPool function in the TLS configuration only parses the first PEM block from CA certificate files. When a CA bundle contains multiple certificates e.g., intermediate + root CA, only the first certificate is loaded. This silently breaks certificate chain validation for mTLS...