CVE-2026-1584 Gnutls: gnutls: remote denial of service via crafted clienthello with invalid psk binder

A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key PSK binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and...

pyOpenSSL: TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

A flaw was found in pyOpenSSL. The settlsextservernamecallback callback function can be used to implement Server Name Indication SNI during the TLS handshake. When the callback raises an unhandled exception, the handshake incorrectly proceeds instead of terminating. This fail-open behavior can...

CVE-2026-34582

A flaw was found in Botan, a C++ cryptography library. The TLS 1.3 implementation in Botan allows application data to be processed before the TLS handshake is fully completed. A remote attacker can exploit this by omitting critical client authentication messages, such as the Certificate,...

BIT-NGINX-GATEWAY-2026-28755 NGINX ngx_stream_ssl_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxstreamsslmodule module due to the improper handling of revoked certificates when configured with the sslverifyclient on and sslocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Mbed TLS vulnerabilities (USN-8123-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8123-1 advisory. It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use...

Medium: amazon-cloudwatch-agent

Issue Overview: net/http: memory exhaustion in Request.ParseForm CVE-2025-61726 archive/zip: denial of service when parsing arbitrary ZIP archives CVE-2025-61728 crypto/tls: handshake messages may be processed at the incorrect encryption level CVE-2025-61730 crypto/tls: Config.Clone copies...

AZL-81519 CVE-2026-2436 affecting package libsoup for versions less than 3.4.4-15

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the soupserverdisconnect function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a...

CVE-2026-2436 Libsoup: libsoup: denial of service via use-after-free in soupserver during tls handshake

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the soupserverdisconnect function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a...

CVE-2026-2436

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the soupserverdisconnect function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a...

USN-8123-1: Mbed TLS vulnerabilities

It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. CVE-2021-44732 Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted...

USN-8123-1 mbedtls vulnerabilities

It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. CVE-2021-44732 Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted...

CVE-2026-28755

A flaw was found in NGINX, specifically within its ngxstreamsslmodule. When NGINX is configured to verify client certificates and use the Online Certificate Status Protocol OCSP for revocation checks, it fails to properly enforce the revocation status. This allows a Transport Layer Security TLS...

EUVD-2026-14887

NGINX Plus and NGINX Open Source have a vulnerability in the ngxstreamsslmodule module due to the improper handling of revoked certificates when configured with the sslverifyclient on and sslocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the...

AZL-80783 CVE-2026-28755 affecting package nginx for versions less than 1.28.3-1

NGINX Plus and NGINX Open Source have a vulnerability in the ngxstreamsslmodule module due to the improper handling of revoked certificates when configured with the sslverifyclient on and sslocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the...

ALPINE-CVE-2026-28755

NGINX Plus and NGINX Open Source have a vulnerability in the ngxstreamsslmodule module due to the improper handling of revoked certificates when configured with the sslverifyclient on and sslocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the...

PT-2026-27433

Name of the Vulnerable Software and Affected Versions NGINX Plus affected versions not specified NGINX Open Source affected versions not specified Description The ngx stream ssl module module contains an issue with the improper handling of revoked certificates. When configured with the ssl verify...

CVE-2026-28755: Incorrect Authorization

NGINX Plus and NGINX Open Source have a vulnerability in the ngxstreamsslmodule module due to the improper handling of revoked certificates when configured with the sslverifyclient on and sslocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the...

CVE-2026-32305

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. A remote attacker can exploit this vulnerability by sending fragmented ClientHello packets during the Transport Layer Security TLS handshake. This causes Traefik's Server Name Indication SNI extraction to fail, leading to a...

Linux Distros Unpatched Vulnerability : CVE-2026-4395

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Heap-based buffer overflow in the KCAPI ECC code path of wceccimportx963ex in wolfSSL wolfcrypt allows a remote attacker to write attacker-controlled data past...

CVE-2026-2645 Acceptance of CertificateVerify Message before ClientKeyExchange in TLS 1.2

In wolfSSL 5.8.2 and earlier, a logic flaw existed in the TLS 1.2 server state machine implementation. The server could incorrectly accept the CertificateVerify message before the ClientKeyExchange message had been received. This issue affects wolfSSL before 5.8.4 wolfSSL 5.8.2 and earlier is...