curl: libcurl: Integer truncation in curl_easy_ssls_import() causes TLS sessions to never expire

Summary: curleasysslsimport deserializes a TLS session blob and stores it in the in-memory session cache. In Curlsslsessionunpack lib/vtls/vtlsspack.c:311, the validuntil field is read as uint64t and cast directly to curlofft int64t with no bounds check — so a crafted blob encoding validuntil =...

SUSE CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

CVE-2026-34873

A flaw was found in Mbed TLS. This vulnerability allows a remote attacker to impersonate a client during the resumption of a TLS 1.3 session. This could lead to unauthorized access or other security breaches by allowing the attacker to act as a legitimate client. Mitigation Mitigation for this...

EUVD-2026-18064

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

DEBIAN-CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

UBUNTU-CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

TencentOS Server 3: git-lfs (TSSA-2026:0203)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0203 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

TencentOS Server 3: osbuild-composer (TSSA-2026:0204)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0204 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

CVE-2026-34873

Summary: CVE-2026-34873 affects Mbed TLS 3.5.0–4.0.0, enabling client impersonation during TLS 1.3 session resumption. Impact (per CVE): Confidentiality and integrity may be affected (CRITICAL/9.1 CVSS). Root cause (as described): vulnerability arises during TLS 1.3 session resumption with the Mb...

RHEL 9 : OpenShift Container Platform 4.19.27 (RHSA-2026:5876)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:5876 advisory. Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or privat...

CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

CVE-2026-34873

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

PT-2026-29611

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session...

Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Overview Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiation 'Algorithm Downgrade' in the TLS 1.3 session resumption logic if the subsequent ClientHello negotiates TLS 1.2 back. An attacker can gain unauthorized access by impersonating a...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...