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
1,192 results · Feed
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Critical 9.1
NewType Infortech｜NT OneAPP - Improper Certificate Validation
NT OneAPP developed by NewType Infortech has an Improper Certificate Validation vulnerability. Unauthenticated network-adjacent attackers can perform a man-in-the-middle attack by failing to validate the server certificate and the hostname, thereby intercepti…
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High 8.7
Traefik before 2.11.58 and 3.7.14 TLS Config Bypass via NTLM/Kerberos Round Tripper
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by ServersTransport, so one service's TLS client configuration is reused for another service's backend. An unauthenticat…
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Medium 4.8
SAML SSO - Service Provider - Critical - Improper certificate validation - SA-CONTRIB-2026-142
Improper Certificate Validation vulnerability in Drupal SAML SSO - Service Provider allows Adversary in the Middle (AiTM). This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
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Medium 4.8
Cloud - Critical - Remote code execution - SA-CONTRIB-2026-176
Improper Certificate Validation vulnerability in Drupal Cloud allows Adversary in the Middle (AiTM). This issue affects Cloud versions: from 0.0.0 to 7.0.1.
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Medium 6.8
Ca-certificates: distrust emudhra intermediate ca certificates due to security concerns
The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certif…
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Critical 10.0
Apache Traffic Server: TLS session ticket resumption bypasses per-SNI verify_client STRICT enforcement
Apache Traffic Server can resume a TLS session across SNI virtual hosts without re-verifying a client certificate required by the resumed host's verify_client STRICT policy. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 throu…
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Critical 10.0
Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin
Apache Traffic Server's default outbound session-sharing policy can reuse a pooled TLS session authenticated with one client certificate for a transaction configured to present a different one. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.…
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Medium 6.8
FreeRDP 2.0.0 before 3.32.0 Proxy Improper TLS Certificate Validation
FreeRDP from 2.0.0 before 3.32.0 contains an improper certificate validation vulnerability in its proxy that accepts untrusted target TLS certificates when no verification module is configured. Network-positioned attackers can intercept the proxy's outbound c…
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Low 3.7
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java S…
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Critical 9.1
Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates
Mozilla::CA versions before 20261020 for Perl provide a CA certificate bundle containing a root linked to compromised intermediates. The bundle includes "emSign ECC Root CA - G3", which provides a trust path for intermediate certificates whose private keys ar…
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High 8.8
Improper certificate validation in Network in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attac…
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Critical 9.1
wolfSSL public-key pinning bypass
When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a m…
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High 7.4
knownhost callback mismatches key as missing
When libcurl uses libssh2 with a hashed `known_hosts` file, an unrelated initial entry can cause host key validation to report a key *mismatch* as a *missing* key to the `CURLOPT_SSH_KEYFUNCTION` callback.
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Critical —
uv's bundled CA store trusts an emSign root whose intermediate CA keys are compromised
By default, uv verifies TLS connections against a vendored copy of the `webpki-root-certs` bundle. Versions before 0.13.4 include the `emSign ECC Root CA - G3` root. Eight eMudhra intermediate CA certificates that chain to that root have compromised private k…
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Critical —
certifi bundles emSign root CAs with compromised intermediate CA keys
Certifi versions before 2026.10.18 include the `emSign ECC Root CA - G3` root certificate in their bundled CA store. Eight eMudhra intermediate CA certificates that chain to this root have compromised private keys and the CA has revoked them. An attacker with…
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Medium 5.4
Cryptographic issue in the Security Block-lists, Allow-lists, and other State component
Mozilla blocked compromised intermediate eMudhra certificates via OneCRL on the 17th of October which was distributed to clients via RemoteSettings the same day. This update contains the updated OneCRL block list, ensuring clients will block the compromised c…
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Low 3.7
IBM Concert Software Improper Certificate Validation
IBM Concert 1.0 through 3.0.0 is vulnerable to Improper Certificate Validation.
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Low 3.7
TufayelLUS TikTok-Video-Downloader-PHP TLS index.php certificate validation
A security vulnerability has been detected in TufayelLUS TikTok-Video-Downloader-PHP up to c4230497bb23dd9c1f81456fe8a982d951feac0d. Affected by this issue is some unknown functionality of the file index.php of the component TLS Handler. Such manipulation lea…
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Medium 5.9CVE-2026-85247 Public exploit
Apache Camel: Camel-Knative Improper Certificate Validation When SSL Is Enabled Without a Truststore
Improper Certificate Validation vulnerability in Apache Camel Knative component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. When SSL was enabled on the Knative HTTP client but no truststore was configured, the client…
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Low 3.7
GlitterWare Passy TLS main.dart MyHttpOverrides certificate validation
A vulnerability has been found in GlitterWare Passy up to 1.10.1. The affected element is the function MyHttpOverrides in the library lib/main.dart of the component TLS Handler. Such manipulation leads to improper certificate validation. The attack may be lau…
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Low 3.7
f3-factory fatfree-core HTTP Client web.php _curl certificate validation
A vulnerability has been found in f3-factory fatfree-core up to 3.9.2. This vulnerability affects the function _curl of the file web.php of the component HTTP Client. Such manipulation leads to improper certificate validation. The attack may be performed from…
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Low 3.7
diem-project diem Google Analytics Client gapi.class.php certificate validation
A flaw has been found in diem-project diem up to 116974edfb9a5b8bd69cb13586dc62bcdbb485ad. Affected is an unknown function of the file dmCorePlugin/lib/vendor/gapi/gapi.class.php of the component Google Analytics Client. Executing a manipulation can lead to i…
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Medium 6.5
OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation
OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 contains an improper certificate validation vulnerability that disables TLS verification when OTEL_EXPORTER_OTLP_CERTIFICATE variables are empty strings. Man-in-the-middle attackers can …
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Medium 4.8
A potential improper certificate validation vulnerability was reported in Lenovo Smart Camera C33, distributed exclusiv…
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High 7.4
undici vulnerable to TLS certificate validation bypass via dropped tls options in Agent
undici is an HTTP client library for Node.js. In versions 4.0.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its Agent dispatcher passes its constructor options through a JSON-based deep clone before forwarding them to each per-origin pool,…
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High 8.0
Steve doesn’t verify a server’s certificate and is susceptible to man-in-the-middle (MitM) attacks
A vulnerability has been identified in Steve where by default it was using an insecure option that did not validate the certificate presented by the remote server while performing a TLS connection. This could allow the execution of a man-in-the-middle (MitM) …
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Medium 6.3
Fleet doesn’t validate a server’s certificate when connecting through SSH
A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file. This could allow the execution of a man-in-the…
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Medium 6.0
Improper certificate validation in Cato Client tunnel handshake
Improper certificate validation in the tunnel handshake in Cato Client allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic.
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Critical 9.1
In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP client relies on an SSL c…
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Medium 6.3
TLS 1.2 session resumption in ssl crosses SNI virtual-host client-certificate trust boundaries
Improper Certificate Validation vulnerability in the ssl application in Erlang/OTP allows a client that holds a certificate trusted by one SNI virtual host to authenticate to a second SNI virtual host on the same listener by resuming its TLS 1.2 session there…
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Critical 9.0
Dell Terraform Provider for Redfish, versions prior to 1.6.2, contains an Improper Certificate Validation vulnerability…
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Medium 5.9
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploit depen…
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Medium 5.9
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploit depen…
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High 7.5
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation …
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High 7.5
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation …
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High 7.5
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation …
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High 7.5
CAI Content Credentials | Improper Certificate Validation (CWE-295)
CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation …
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Medium 6.5
IBM WebSphere Application Server Liberty Improper Certificate Validation
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.
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High 7.5
Active Directory Federation Services (AD FS) Spoofing Vulnerability
No cwe for this issue in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
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High 7.4
Active Directory Federation Services (AD FS) Spoofing Vulnerability
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.