GnuTLS 信任管理问题漏洞

GnuTLS is an open-source, free security communication library developed by GnuTLS. GnuTLS has a trust management vulnerability. This vulnerability arises when the previous certificate issuer only had exclusion from name constraints, and the allowed name constraints were incorrectly ignored. This...

PT-2026-38362

Name of the Vulnerable Software and Affected Versions Claude Desktop versions 1.2581.0 through 1.4303.0 Description The SSH remote development feature fails to compare the server's presented host key against the stored key, verifying only if the hostname exists in the /.ssh/known hosts file. This...

Improper Certificate Validation allows MITM injection of remote CSS content

Summary The CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle MITM attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is established with OpenSSL::SSL::VERIFYNONE, meaning any HTTPS certificate—even entirely untrusted—will...

CVE-2026-41484

OpenTelemetry.Exporter.OneCollector is a .NET exporter that sends telemetry to a OneCollector back-end over HTTP. In versions 1.15.0 and earlier, when a request to the configured back-end or collector results in an unsuccessful HTTP 4xx or 5xx response, the HttpJsonPostTransport class reads the...

Harvester's SUSE Virtualization Registration Client Vulnerable to MITM and DOS

Impact A vulnerability has been identified in the SUSE Virtualization Harvester Rancher integration mechanism where by default the registration client uses an insecure TLS option that fails to verify the remote server’s certificate. This security gap could allow the execution of a man-in-the-midd...

GHSA-PGH9-MPWC-8JJF Harvester's SUSE Virtualization Registration Client Vulnerable to MITM and DOS

Impact A vulnerability has been identified in the SUSE Virtualization Harvester Rancher integration mechanism where by default the registration client uses an insecure TLS option that fails to verify the remote server’s certificate. This security gap could allow the execution of a man-in-the-midd...

Improper Certificate Validation

Overview lemur is a Certificate management and orchestration service Affected versions of this package are vulnerable to Improper Certificate Validation in the ldap process. An attacker can intercept authentication credentials and modify LDAP responses by performing a man-in-the-middle attack...

Lemur: LDAP Authentication Globally Disables TLS Certificate Verification When LDAP_USE_TLS Is Enabled

Description Overview When LDAP TLS is enabled LDAPUSETLS = True, Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level. This allows a man-in-the-middle attacker positioned between Lemur and the LDAP server to intercept all...

PT-2026-38301

Name of the Vulnerable Software and Affected Versions Lemur versions prior to 1.9.0 Description When LDAP TLS is enabled via the LDAP USE TLS variable, the LDAP authentication module in the bind function unconditionally disables TLS certificate verification at the global ldap module level. This...

RHCOS 3 : OpenShift Container Platform 3.11.374 (RHSA-2021:0079)

The remote Red Hat Enterprise Linux CoreOS 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0079 advisory. - golang.org/x/crypto: Keystream loop in amd64 assembly when overflowing 32-bit counter CVE-2019-11840 - kubernetes: MITM using...

RHCOS 3 : OpenShift Container Platform 3.11.318 jenkins-2-plugins (RHSA-2020:5102)

The remote Red Hat Enterprise Linux CoreOS 3 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:5102 advisory. - jenkins-2-plugins/mailer: Missing hostname validation in Mailer Plugin could result in MITM CVE-2020-2252 -...

RHCOS 4 : OpenShift Container Platform 4.2.36 containernetworking-plugins (RHSA-2020:2592)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2592 advisory. - containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters CVE-2020-10749 Note that Nessus has not...

Improper Validation Of Certificate

Apache Thrift is vulnerable to Improper Validation of Certificate. The vulnerability is due to improper validation of certificates against the host name, which allows an attacker to perform man-in-the-middle attacks by presenting a mismatched or malicious certificate...

GHSA-VCGP-9326-PQCP net-imap vulnerable to STARTTLS stripping via invalid response timing

Summary A man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. Details When using Net::IMAPstarttls to upgrade a plaintext connection to use TLS, a man-in-the-middle attacker can inject a tagged OK response with an easily predictable tag. By sendi...

net-imap vulnerable to STARTTLS stripping via invalid response timing

Summary A man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. Details When using Net::IMAPstarttls to upgrade a plaintext connection to use TLS, a man-in-the-middle attacker can inject a tagged OK response with an easily predictable tag. By sendi...

JLSEC-2026-395

When curl 7.84.0 does FTP transfers secured by krb5, it handles message verification failures wrongly. This flaw makes it possible for a Man-In-The-Middle attack to go unnoticed and even allows it to inject data to the client...

JLSEC-2026-432 libcurl accidentally skips the certificate verification for QUIC connections when connecting to a...

libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore, it does not detect impostors or man-in-the-middle attacks...

Introducing Wallarm Middle East Cloud: Built for Data Residency Compliance

As API and AI adoption grows across the Middle East, so do the expectations around how data is handled. For many organizations operating in this region, it’s not just about securing applications. It’s about doing it in a way that keeps data in-country and aligned with local requirements. Today,...

CVE-2026-40974

A flaw was found in Spring Boot's Cassandra auto-configuration. This vulnerability allows an adjacent attacker to bypass hostname verification during SSL Secure Sockets Layer connection establishment to Cassandra. This could enable a man-in-the-middle attack, potentially leading to unauthorized...

gnutls: gnutls: Security bypass due to incorrect name constraint handling

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities CAs only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate...