EUVD-2026-67934

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of...

CVE-2026-81518

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of...

CVE-2026-81518 BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of...

BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of...

CVE-2026-81518

mongosqld in the MongoDB BI Connector contains a TLS misconfiguration: when a client certificate authority file is configured, the listener requests a client certificate during the TLS handshake but does not require it. In deployments where client certificates serve as the sole authentication mec...

PT-2026-83361

Name of the Vulnerable Software and Affected Versions mongosqld affected versions not specified Description When configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one. This allows clients that provide no...

CVE-2026-68569 Apache Tomcat: Principal lookup can fail open in some cases

Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances e.g. CLIENT-CERT, SPNEGO that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through...

USN-8670-2 curl vulnerability

USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. Original advisory details: Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. Thi...

Astra Linux – Vulnerability in Tomcat9

CLIENTCERT authentication does not fail as expected in some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat versions from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, and from 9.0.92 through 9.0.116. Users are recommended to...

Astra Linux – Vulnerability in Tomcat9

Improper input validation vulnerability. This issue affects Apache Tomcat: versions 11.0.0-M1 through 11.0.14, 10.1.0-M1 through 10.1.49, and 9.0.0-M1 through 9.0.112. The following versions were at the end of their support lifecycles at the time the CVE was created, but are still affected: 8.5.0...

Astra Linux – Vulnerability in PostgresSQL 11

When the server is configured to use trust authentication with a clientcert requirement or to use cert authentication, a man-in-the-middle attacker can inject arbitrary SQL queries during the initial establishment of a connection, despite the use of SSL certificate verification and encryption...

Astra Linux - Vulnerability in Golang-1.19

Verifying a certificate chain that contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/TLS clients, as well as servers that have Config.ClientAuth set to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default...

CVE-2026-15576

CVE-2026-15576 is an improper authentication vulnerability in the agent receiver of Checkmk versions prior to 2.5.0p10 . An unauthenticated remote attacker can bypass mutual TLS (mTLS) client certificate verification on relay endpoints by supplying a fixed placeholder identity in the request URL....

CVE-2026-15576 Agent receiver accepts mTLS requests without a client certificate

Improper authentication in the agent receiver of Checkmk 2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and...

CVE-2026-16837

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to improper handling of a missing SSL client certificate...

CVE-2026-16837

IBM AIX 7.2 and 7.3, and PowerVM VIOS 4.1, mishandle a missing SSL client certificate, allowing an unauthenticated remote attacker to trigger denial of service. CVSS 3.1 scores this HIGH (7.5), with no confidentiality or integrity impact. No patch or exploitation details are provided in the docum...

CVE-2026-16837 Vulnerabilities in IBM AIX and PowerVM VIOS

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to improper handling of a missing SSL client certificate...

CVE-2026-74882

openssl_encrypt versions before 1.4.0 ship with an insecure default in its IntegrityProxyConfig trusted_proxies that trusts the entire RFC 1918 private address space. This allows attackers on private networks to forge client certificate headers and bypass mTLS authentication when ProxyAuth valida...

UBUNTU-CVE-2026-18703

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow...

CVE-2026-18703

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow...