CVE-2026-53583

A flaw was found in libgit2, a C library for Git functionality. An inverted comparison in the OpenSSL backend's certificate verification logic, specifically when handling IP-literal hosts and certificate IP SubjectAltNames, allows a network attacker to intercept HTTPS connections. By presenting a...

crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries

A flaw was found in the crypto/x509 package of golang. This vulnerability allows a remote attacker to cause a Denial of Service DoS by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name SAN entries. The certificate verification process, specifical...

CVE-2026-53583 libgit2: Inverted IP SubjectAltName Comparison in OpenSSL Backend

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verifyservercert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GENIPADD...

CVE-2026-73251

Mongoose (embedded web server and network library) prior to 7.23 contains a critical TLS certificate verification flaw in src/tls_builtin.c. When a client is configured with a multi-certificate CA bundle, mg_tls_init() stores the bundle in tls->ca_bundle_der while tls->ca_der.len remains ze...

CVE-2026-73251 Mongoose Built-in TLS: CA-bundle certificate chain accepted without any signature verification

Mongoose is an embedded web server and network library. Prior to 7.23, a network attacker can impersonate a TLS server to a Mongoose client configured with a multi-certificate CA bundle. In src/tlsbuiltin.c, the mgtlsinit function stores the bundle in tls-cabundleder while tls-cader.len remains...

CVE-2026-73251 Mongoose Built-in TLS: CA-bundle certificate chain accepted without any signature verification

Mongoose is an embedded web server and network library. Prior to 7.23, a network attacker can impersonate a TLS server to a Mongoose client configured with a multi-certificate CA bundle. In src/tlsbuiltin.c, the mgtlsinit function stores the bundle in tls-cabundleder while tls-cader.len remains...

EUVD-2026-63494

Mongoose is an embedded web server and network library. Prior to 7.23, a network attacker can impersonate a TLS server to a Mongoose client configured with a multi-certificate CA bundle. In src/tlsbuiltin.c, the mgtlsinit function stores the bundle in tls-cabundleder while tls-cader.len remains...

CVE-2026-52723

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration performs VAU server certificate validation in app/vau/VAUProtokoll.py without anchoring the signedvauserverpubkeys and...

CVE-2026-50578

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration disables TLS certificate verification for both ePA connections in app/vau/VAUProtokoll.py and Konnektor connections in...

CVE-2026-50578

Versions of ePA 3.x Integration before 1.3.0 disable TLS certificate verification (self.session.verify=False) in app/vau/VAUProtokoll.py and app/konnektor/Konnektor.py, allowing a network attacker to present arbitrary certificates, terminate TLS, and intercept or observe mutual-TLS smartcard exch...

CVE-2026-50578

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration disables TLS certificate verification for both ePA connections in app/vau/VAUProtokoll.py and Konnektor connections in...

CVE-2026-50578 ePA 3.x Integration: TLS Certificate Verification Universally Disabled

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration disables TLS certificate verification for both ePA connections in app/vau/VAUProtokoll.py and Konnektor connections in...

EUVD-2026-61056

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration disables TLS certificate verification for both ePA connections in app/vau/VAUProtokoll.py and Konnektor connections in...

CVE-2026-50578 ePA 3.x Integration: TLS Certificate Verification Universally Disabled

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration disables TLS certificate verification for both ePA connections in app/vau/VAUProtokoll.py and Konnektor connections in...

EUVD-2026-61055

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration performs VAU server certificate validation in app/vau/VAUProtokoll.py without anchoring the signedvauserverpubkeys and...

CVE-2026-59825 Mastodon: Unwanted deactivation of SSL/TLS certificate verification

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.19 and from 4.5.0 until 4.5.12, Mastodon's app/models/concerns/user/ldapauthenticable.rb mutates OpenSSL::SSL::SSLContext::DEFAULTPARAMS when LDAP authentication uses LDAPTLSNOVERIFY=true, disabling SSL and T...

CVE-2026-59825 Mastodon: Unwanted deactivation of SSL/TLS certificate verification

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.19 and from 4.5.0 until 4.5.12, Mastodon's app/models/concerns/user/ldapauthenticable.rb mutates OpenSSL::SSL::SSLContext::DEFAULTPARAMS when LDAP authentication uses LDAPTLSNOVERIFY=true, disabling SSL and T...

CVE-2026-57826

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...

CVE-2026-57826

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...

CVE-2026-57826

openHiTLS (a TLS protocol implementation) is affected in versions 0.2.0 through 0.3.2 . During X.509 certificate chain verification , the basic constraints extension and CA flag of intermediate CAs are only validated for v3 certificates; v1 and v2 intermediate certificates are ignored, potentiall...