CVE-2026-6731

Technical details (affected products, versions, root cause specifics, or remediation) are not publicly available in the provided documents; monitor for updates and future disclosures.

EUVD-2026-39555

X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted...

SUSE CVE-2010-2074

istream.c in w3m 0.5.2 and possibly other versions, when sslverifyserver is enabled, does not properly handle a '\0' character in a domain name in the 1 subject's Common Name or 2 Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary S...

CXF: SSL hostname verification bypass, incomplete CVE-2012-5783 fix

It was found that the fix for CVE-2012-5783 was incomplete: the code added to check that the server host name matches the domain name in a subject's Common Name CN field in X.509 certificates was flawed. A man-in-the-middle attacker could use this flaw to spoof an SSL server using a specially...

DEBIAN-CVE-2014-3756

The client in Mumble 1.2.x before 1.2.6 allows remote attackers to force the loading of an external file and cause a denial of service hang and resource consumption via a crafted string that is treated as rich-text by a Qt widget, as demonstrated by the 1 user or 2 channel name in a Qt dialog, 3...

AZL-44784 CVE-2013-6444 affecting package pywbem 0.17.6-12

PyWBEM 0.7 and earlier does not verify that the server hostname matches a domain name in the subject's Common Name CN or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate...

jakarta-commons-httpclient: missing connection hostname check against X.509 certificate name

It was found that Apache Commons HttpClient 3.x, as used in Amazon Flexible Payments Service FPS merchant Java SDK and other products, does not verify that the server hostname matches a domain name in the subject's Common Name CN or subjectAltName field of the X.509 certificate, which allows...

axis: missing connection hostname check against X.509 certificate name

Apache Axis did not verify that the server host name matched the domain name in the subject's Common Name CN or subjectAltName field in X.509 certificates. This could allow a man-in-the-middle attacker to spoof an SSL server if they had a certificate that was valid for any domain name...

PHP 5.3.x < 5.3.21 cURL X.509 Certificate Domain Name Matching MiTM Weakness

According to its banner, the version of PHP 5.3.x installed on the remote host is prior to 5.3.21. It is, therefore, potentially affected by a weakness in the cURL extension that can allow SSL spoofing and man-in-the-middle attacks. When attempting to validate a certificate, the cURL library...

DEBIAN-CVE-2011-3848

Directory traversal vulnerability in Puppet 2.6.x before 2.6.10 and 2.7.x before 2.7.4 allows remote attackers to write X.509 Certificate Signing Request CSR to arbitrary locations via 1 a double-encoded key parameter in the URI in 2.7.x, 2 the CN in the Subject of a CSR in 2.6 and 0.25...

DEBIAN-CVE-2010-3170

Mozilla Firefox before 3.5.14 and 3.6.x before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and SeaMonkey before 2.0.9 recognize a wildcard IP address in the subject's Common Name field of an X.509 certificate, which might allow man-in-the-middle attackers to spoof arbitrary SSL serve...

OpenLDAP: Doesn't properly handle NULL character in subject Common Name

libraries/libldap/tlso.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name CN field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers vi...

OpenLDAP: Doesn't properly handle NULL character in subject Common Name

libraries/libldap/tlso.c in OpenLDAP 2.2 and 2.4, and possibly other versions, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name CN field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers vi...