CVE-2026-103602 Name constraints bypass via trailing dot in rfc822Name, dNSName and URI hosts

Improper certificate validation in PkixNameConstraintValidator in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can obtain certificates from, a name-constrained intermediate CA to have certificates accepted during PKIX certification path validation fo...

EUVD-2026-91228

Improper certificate validation in the directoryName name-constraint check PkixNameConstraintValidator.WithinDNSubtree in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can have certificates issued by, a name-constrained intermediate CA to get...

CVE-2026-63577 Name Constraints bypass: directoryName constraint matched at any position in the DN instead of as a prefix

Improper certificate validation in the directoryName name-constraint check PkixNameConstraintValidator.WithinDNSubtree in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can have certificates issued by, a name-constrained intermediate CA to get...

CVE-2026-63577

The bc-csharp library (versions before 2.7.0 ) by Legion of the Bouncy Castle Inc. contains an improper certificate validation flaw in the PkixNameConstraintValidator.WithinDNSubtree check. The root cause is that the validator identifies the first Relative Distinguished Name (RDN) of a constraint...

CVE-2026-63577 Name Constraints bypass: directoryName constraint matched at any position in the DN instead of as a prefix

Improper certificate validation in the directoryName name-constraint check PkixNameConstraintValidator.WithinDNSubtree in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can have certificates issued by, a name-constrained intermediate CA to get...

CVE-2026-63577 Name Constraints bypass: directoryName constraint matched at any position in the DN instead of as a prefix

Improper certificate validation in the directoryName name-constraint check PkixNameConstraintValidator.WithinDNSubtree in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can have certificates issued by, a name-constrained intermediate CA to get...

CVE-2026-63576 URI name constraints checked against a mis-parsed host

Improper certificate validation in PkixNameConstraintValidator ExtractHostFromURL in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a name-constrained subordinate CA, or anyone able to obtain certificates with chosen subjectAltName URIs from such a CA, to bypass permitted or...

CVE-2026-63576 URI name constraints checked against a mis-parsed host

Improper certificate validation in PkixNameConstraintValidator ExtractHostFromURL in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a name-constrained subordinate CA, or anyone able to obtain certificates with chosen subjectAltName URIs from such a CA, to bypass permitted or...

EUVD-2026-91227

Improper certificate validation in PkixNameConstraintValidator ExtractHostFromURL in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a name-constrained subordinate CA, or anyone able to obtain certificates with chosen subjectAltName URIs from such a CA, to bypass permitted or...

CVE-2026-63576 URI name constraints checked against a mis-parsed host

Improper certificate validation in PkixNameConstraintValidator ExtractHostFromURL in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a name-constrained subordinate CA, or anyone able to obtain certificates with chosen subjectAltName URIs from such a CA, to bypass permitted or...

CVE-2026-63576

The bc-csharp library by Legion of the Bouncy Castle Inc. (versions before 2.7.0 ) contains an improper certificate validation vulnerability in the PkixNameConstraintValidator (specifically the ExtractHostFromURL function). The root cause is that the software extracts the host from a URI using st...

EUVD-2026-91220

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

CVE-2026-63569

The bc-csharp library by Legion of the Bouncy Castle Inc. (versions before 2.7.0 ) is vulnerable to improper input validation in the DHAgreement.CalculateAgreement function during MTI/A0 two-pass Diffie-Hellman key exchanges. An on-path attacker can provide a crafted out-of-range or small-order e...

CVE-2026-63569 MTI/A0 DHAgreement does not validate the peer's ephemeral value

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

CVE-2026-63569 MTI/A0 DHAgreement does not validate the peer's ephemeral value

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

CVE-2026-63569 MTI/A0 DHAgreement does not validate the peer's ephemeral value

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

CVE-2026-15999 AES-CCM decryption accepts zero or out-of-range tag length, bypassing authentication

Improper validation of integrity check value in the AES-CCM implementation CcmParameters and CcmBlockCipher in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to modify CCM-encrypted content without detection via an AlgorithmIdentifier whose CCMParameters declar...

CVE-2026-63045

A flaw was found in httpd. When configured as a forward proxy using the modproxyftp module, the server improperly validates the network address returned in a File Transfer Protocol FTP passive mode PASV response. A malicious FTP server can exploit this flaw by returning a crafted reply, forcing t...

CVE-2026-15911

A flaw was found in confluent-kafka. The HashiCorp Vault Key Management Service KMS integration fails to properly validate Transport Layer Security TLS certificates by default. A remote attacker able to intercept network traffic could exploit this flaw to intercept and decrypt sensitive data or...

CVE-2026-104480 Improper MLS Welcome roster validation in Discord libdave allows unauthorized group membership

Discord libdave before 1.2.0 did not reject an MLS Welcome message when the resulting group roster contained an unrecognized participant. An attacker in control of the DAVE signaling path the voice gateway, or an equivalent position able to add, alter, or withhold signaling messages to a client...