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...

CVE-2026-42011: Improper Certificate Validation

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...

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...

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...

CVE-2026-41483: Allocation of Resources Without Limits or Throttling

OpenTelemetry.Resources.Azure is the .NET resource detector for Azure environments. In versions 1.15.0-beta.1 and earlier, the AzureVmMetaDataRequestor class makes HTTP requests to the Azure VM instance metadata service and reads the response body into memory without any size limit. An attacker w...

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...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-31773

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: SMP: derive legacy responder STK authentication from MITM state The legacy responder path in smprandom currently labels the stored STK as authenticat...

apache-airflow-providers-smtp: No certificate validation on SMTP STARTTLS connections in SMTP provider

Apache Airflow's SMTP provider SmtpHook called Python's smtplib.SMTP.starttls without an SSL context, so no certificate validation was performed on the TLS upgrade. A man-in-the-middle between the Airflow worker and the SMTP server could present a self-signed certificate, complete the STARTTLS...

Improper Certificate Validation

Overview ckan is a world’s leading Open Source data portal platform. It powers dozens of Open Data portals around the world, including data.gov, open.canada.ca and europeandataportal.eu but also regional, research and community organizations. It makes easy to publish, share and find data online a...

OpenTelemetry.Resources.Azure has an unbounded HTTP response body read

Summary OpenTelemetry.Resources.Azure reads unbounded HTTP response bodies from the Azure VM remote instance metadata service endpoint into memory. This would allow an attacker-controlled endpoint or one acting as a Man-in-the-Middle MitM to cause excessive memory allocation and possible process...

Improper Validation of Specified Quantity in Input

Overview Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input due to improper handling of oversized Subject Alternative Name fields during certificate validation. An attacker can bypass certificate validation by crafting a certificate with an...

CVE-2026-40970

A flaw was found in Spring Boot. When configured to use an SSL Secure Sockets Layer bundle, the Elasticsearch auto-configuration component does not perform hostname verification when establishing a connection to the Elasticsearch server. An attacker on an adjacent network could exploit this by...

Improper Certificate Validation

Overview org.apache.storm:storm-metrics-prometheus is a Distributed and fault-tolerant realtime computation Affected versions of this package are vulnerable to Improper Certificate Validation in the INSECURECONNECTIONFACTORY calls. An attacker can intercept sensitive data and credentials by...

CVE-2026-40557: Improper Certificate Validation

Improper Certificate Validation via Global SSL Context Downgrade in Apache Storm Prometheus Reporter Versions Affected: from 2.6.3 to 2.8.6 Description: In production deployments where an administrator enables storm.daemon.metrics.reporter.plugin.prometheus.skiptlsvalidation by default it is...

CVE-2026-41319

MailKit is a cross-platform mail client library built on top of MimeKit. A STARTTLS Response Injection vulnerability in versions prior to 4.16.0 allows a Man-in-the-Middle attacker to inject arbitrary protocol responses across the plaintext-to-TLS trust boundary, enabling SASL authentication...

CVE-2026-41319

Summary (CVE-2026-41319) MailKit (MimeKit-based) exposes a STARTTLS vulnerability where the internal read buffers of SmtpStream, ImapStream, and Pop3Stream are not flushed when upgrading to TLS with SslStream. This allows pre-TLS attacker-injected data to be treated as post-TLS, enabling a MITM-b...

CVE-2026-41319 MailKit has STARTTLS Response Injection via unflushed stream buffer that enables SASL mechanism downgrade

MailKit is a cross-platform mail client library built on top of MimeKit. A STARTTLS Response Injection vulnerability in versions prior to 4.16.0 allows a Man-in-the-Middle attacker to inject arbitrary protocol responses across the plaintext-to-TLS trust boundary, enabling SASL authentication...

CVE-2026-41319 MailKit has STARTTLS Response Injection via unflushed stream buffer that enables SASL mechanism downgrade

MailKit is a cross-platform mail client library built on top of MimeKit. A STARTTLS Response Injection vulnerability in versions prior to 4.16.0 allows a Man-in-the-Middle attacker to inject arbitrary protocol responses across the plaintext-to-TLS trust boundary, enabling SASL authentication...