Weakness (CWE)
CWE-295: Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
How to prevent it (2 mitigations)
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Architecture and Design, Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
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Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
Source: MITRE CWE-295
480 results · Clear filters · Feed
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High 7.4
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/ldap_authenticable.rb mutates OpenSSL::SSL::SSLContext::DEFAULT_PARAMS when LDAP authentication uses L…
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High 7.5
Internal API HTTP client hardcodes InsecureSkipVerify:true with no config override (CWE-295)
Internal API HTTP client hardcodes InsecureSkipVerify:true with no config override (CWE-295)
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High 8.0
rsync < 3.5.0 TLS Certificate Validation Bypass via SSL/OpenSSL Mode
rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. A…
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High 8.3
An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.…
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High 8.1
Cleartext transmission of sensitive information in the Core of Ivanti Endpoint Manager before version 2024 SU7 allows a…
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High 7.4
Undertow-core: undertow: authentication bypass via ajp ssl_cert/is_ssl forgery
the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a fo…
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High 7.4CVE-2026-67598 Public exploit
Emlog Pro 2.6.23 TLS Certificate Validation Disabled in ai.php
Emlog Pro through 2.6.23 contains a disabled TLS certificate validation vulnerability in include/service/ai.php that allows network-adjacent attackers to intercept outbound HTTPS requests to configured LLM providers by presenting arbitrary TLS certificates, a…
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High 7.7
Improper Certificate Validation in TP-Link Omada Cloud Communications
A certification validation weakness exists in communication between affected Omada devices and cloud controllers. Certificate identity verification does not adequately validate that a presented certificate corresponds to the expected cloud controller hostname…
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High 7.5
Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured
Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass by verifying responses against the response-embedded certificate in verify_xml when no trust anchor is configured. verify_xml in Net::SAML2::Role::VerifyXML runs "return if !$anchors &&…
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High 7.3
eParakstītājs 3.0 for Windows – remote code execution via unauthenticated auto-update
eParakstītājs 3.0 for Windows before version 1.10.0 retrieves and executes its automatic updates over a channel that is not authenticated or integrity-protected. On each launch the application fetches an update descriptor (XML) over TLS but accepts any TLS ce…
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High 8.2
Aap-gateway: aap-gateway: authentication bypass in event-driven ansible via forged http header
A flaw was found in aap-gateway, a component of Ansible Automation Platform's Event-Driven Ansible (EDA). An unauthenticated remote attacker can bypass mutual Transport Layer Security (mTLS) authentication for event streams. This is achieved by manipulating t…
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High 7.4
Improper certificate validation in the Devolutions Server connection handling in Devolutions Password Manager 2026.2.1.…
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High 8.1
TLS Certificate Verification Disabled on CXF Transport Clients in epa4all
In epa4all, prior to version 2026-05-20, an attacker on the network path between epa4all and any backend (ePA Aktensystem, Konnektor, IDP, TSS) can present a self-signed TLS certificate and intercept the connection. For non-VAU connections (Konnektor, IDP), t…
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High 7.5
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
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High 7.4
Netty: Missing CertificateID Validation in OCSP Response Allows Replay Attacks
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and prior to 4.1.135.Final, `OcspClient` does not validate that the `CertificateID` in an OCSP response matches the requeste…
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High 8.0
Vulnerability in the Oracle WebCenter Content product of Oracle Fusion Middleware (component: Web Content Management). …
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High 7.3
Apache MINA SSHD: SSH certificate options lack validations
Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for client-side and server-side SSH. Server-side OpenSSH user certificate validation during user authentication in an Apache MINA SSHD server did not check f…
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High 8.2
Dancer::Plugin::Auth::Google versions before 0.08 for Perl have TLS verification disabled
Dancer::Plugin::Auth::Google versions before 0.08 for Perl have TLS verification disabled. The default user agent is initialised with SSL_verify_mode explicitly disabled. An attacker with network man-in-the-middle (MITM) capability between the Dancer applicat…
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High 8.8
Azure Connected Machine Agent Elevation of Privilege Vulnerability
Improper certificate validation in Azure Connected Machine Agent allows an unauthorized attacker to elevate privileges over an adjacent network.
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High 7.8
Active Directory Domain Services Elevation of Privilege Vulnerability
Improper certificate validation in Windows Active Directory allows an authorized attacker to elevate privileges locally.
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High 7.5
Lorex 2K Indoor Wi-Fi Security Camera Device Management Server Improper Certificate Validation Vulnerability
Lorex 2K Indoor Wi-Fi Security Camera Device Management Server Improper Certificate Validation Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Lorex 2K Indoor Wi-Fi Security Cameras. U…
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High 7.4
cpp-httplib: TLS certificate chain verification bypassed for IP-literal hosts on Mbed TLS and wolfSSL backends
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIB_MBEDTLS_SUPPO…
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High 7.4
Coder's AI Bridge Proxy skips TLS certificate verification in default configuration
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.30.0 and prior to versions 2.32.7, 2.33.8, and 2.34.2, the AI Bridge Proxy (`aibridgeproxyd`) created a goproxy server whose default transport set `In…
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High 7.4
Improper Certificate Validation
Improper certificate validation vulnerability in B&R Industrial Automation GmbH APROL. This issue affects APROL: before R 4.4-01P5.
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High 8.1
wrong STARTTLS connection reuse
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
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High 8.7
X.509 trust-chain bypass in wolfSSL_X509_verify_cert() via untrusted intermediate anchoring
X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra (OPENSSL_EXTRA) and whose application validates certificates by calling X509_verify_cert() with caller…
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High 8.2
Un-negotiated Raw Public Key (RFC 7250) accepted in place of X.509, bypassing chain validation
Un-negotiated Raw Public Key (RFC 7250) accepted in place of an X.509 certificate, bypassing chain validation. A raw public key has no chain, so ParseCertRelative() accepts it without performing any trust verification; it must therefore only be accepted when …
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High 8.2
X.509 trust-chain bypass via path-depth exhaustion in wolfSSL_X509_verify_cert()
X.509 trust-chain bypass (path-depth exhaustion) in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra whose application calls X509_verify_cert() with caller-supplied untrusted inte…
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High 7.3
Dell Display and Peripheral Manager (DDPM Mac), versions prior to 2.3, contain an Improper Certificate Validation vulne…
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High 8.3
Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theft
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or r…
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High 7.4
undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent
Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert…
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High 8.6
Harvester's SUSE Virtualization Registration Client Vulnerable to MITM and DOS
An attacker with network-level access between the SUSE Virtualization and Rancher Manager in SUSE Harvester before 1.8.0 could interfere with the TLS handshake and abuse it to bypass TLS as a security control.
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High 7.4
In OCaml-TLS before 2.1.0, the server implementation does insufficient checks of the certificate provided by the client…
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High 7.5
Idira Vendor PAM - Self-Hosted Connector: Potential Security Bypass due to Incomplete TLS Certificate Validation
Idira Vendor PAM - Self-Hosted Connector versions prior 1.1.100504 under specific conditions and configuration scenarios, TLS certificate validation may not be fully enforced. CyberArk Security Bulletin: CA26-17
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High 8.5
Idira Endpoint Privilege Manager Agent: Security Control and Cryptographic Validation Bypass in Internal Agent Validation Processes
Idira Endpoint Privilege Manager Agent versions prior to 26.5 exhibit improper access control within internal agent validation processes. A local attacker could potentially bypass built-in security controls or cryptographic validations. Under specific circums…
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High 7.3
Improper Certificate Validation in S2OPC
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
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High 7.4
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authenticat…
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High 8.0
Termix has improper certificate validation in Electron desktop client that enables MITM credential/token theft
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Starting in version 1.7.0, Termix Desktop (Electron) disables TLS certificate validation, allowing a machine-in-the-middle attacker to intercept and …
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High 7.8
A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth head…
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High 7.4
OpenStack oslo.messaging does not verify RabbitMQ broker hostname during TLS handshake
An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain…