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
481 results · Clear filters · Feed
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Medium 5.8
Unsafe remote resource fetching in expansion misp-modules
MISP modules are autonomous modules that can be used to extend MISP for new services. Prior to 3.0.7, an unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs witho…
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Medium 6.2
Prisma Access Agent: Improper Certificate Validation Vulnerability
An improper certificate validation vulnerability in the Prisma Access Agent® for Android and Chrome OS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. By presenting a certificate for any domain issued by a trusted Ce…
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Medium 5.2
Prisma SD-WAN: Improper Certificate Validation Vulnerability
An improper certificate validation vulnerability in the Palo Alto Networks Prisma SD-WAN ION enables man-in-the-middle (MitM) attacker to impersonate the controller.
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Medium 6.6
CKAN: No certificate validation on STMP connection
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM a…
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Medium 4.9
GlobalProtect App: Certificate Validation Bypass Vulnerabilities
Multiple improper certificate validation vulnerabilities in the Palo Alto Networks GlobalProtect™ app enables an attacker to intercept encrypted communications and potentially compromise the endpoint. This can enable a local non-administrative operating syste…
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Medium 4.8
aria2c Improper Certificate Validation
aria2c accepts a server certificate with incorrect Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
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Medium 6.8
Lemur: LDAP TLS certificate verification globally disabled enables credential interception
Lemur manages TLS certificate creation. Prior to 1.9.0, when LDAP TLS is enabled (LDAP_USE_TLS = True), Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level. This allows a man-in-the-middle a…
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Medium 6.8
pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the set_config_value() API method (@permission(Perms.SETTINGS)) in src/pyload/core/api/__init__.py gates security-sensitive options behind a hand-maintained allowlis…
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Medium 5.1
SolidCAM-GPPL-IDE: Path traversal in `inc` directive enables file probing and NTLM-hash leak
SolidCAM-GPPL-IDE is an unofficial, independently developed extension, Postprocessor IDE for SolidCAM. From version 1.0.0 to before version 1.0.2, the inc "filename" directive in GPPL postprocessor files is resolved by GpplDocumentLinkHandler into a clickable…
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Medium 6.9
Vert.x has a DoS via unbounded server-side SNI SslContext cache growth
A TCP client can perform a TLS handshake and present the server name extension with a server name that is accepted by a server wildcard name, e.g. if the server is configured with a certificate accepting *.example.com, any XYZ.example.com where xyz is a valid…
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Medium 6.5
Improper certificate validation in multiple RouterOS services
RouterOS provides various services that rely on correct verification of client and server certificates to secure confidentiality and integrity of communications. This includes OpenVPN, CAPsMAN, Dot1x (802.1X), among others. The vulnerability lies in shared ce…
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Medium 5.9
Apache Airflow Providers SMTP: No certificate validation on SMTP STARTTLS connections in SMTP provider
Apache Airflow's SMTP provider `SmtpHook` called Python's `smtplib.SMTP.starttls()` without an SSL context, so no certificate validation was performed on the TLS upgrade. A man-in-the-middle between the Airflow worker and the SMTP server could present a self-…
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Medium 4.8
Improper TLS Certificate Validation RCE via Malicious Update in DeskTime Time Tracking App
Due to improper TLS certificate validation in the DeskTime Time Tracking App before version 1.3.674, attackers who can position themselves in the network path between the client and the DeskTime update servers can return a malicious executable in response to …
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Medium 5.0
Spring Boot's Cassandra SSL auto-configuration disables TLS hostname verification
Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19),…
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Medium 5.0
Spring Boot's RabbitMQ auto-configuration doesn't perform hostname verification when connecting to the RabbitMQ broker
When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14) per vendor advisory.
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Medium 5.0
Spring Boot's Elasticsearch auto-configuration doesn't perform hostname verification when connecting to the Elasticsearch server.
When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting to the Elasticsearch server. Affected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.
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Medium 4.8
Apache Storm Prometheus Reporter: Disabling TLS verification for Prometheus Reporter also disables it for all other connections
Improper Certificate Validation via Global SSL Context Downgrade in Apache Storm Prometheus Reporter Versions Affected: from 2.6.3 to 2.8.6 Description: In production deployments where an administrator enables storm.daemon.metrics.reporter.plugin.prometheus.…
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Medium 6.8CVE-2026-22747 Public exploit
Unauthorized User Impersonation when Using X.509 Client Certificates
Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an…
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Medium 6.9
Oxia: TLS CA certificate chain validation fails with multi-certificate PEM bundles
Oxia is a metadata store and coordination system. Prior to 0.16.2, the trustedCertPool() function in the TLS configuration only parses the first PEM block from CA certificate files. When a CA bundle contains multiple certificates (e.g., intermediate + root CA…
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Medium 5.5
Sigstore Timestamp Authority has Improper Certificate Validation in verifier
Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signatu…
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Medium 5.4
deepinid plugin in dde-control-center is configured to skip TLS certificate verification when downloading avatar from remote server
dde-control-center is the control panel of DDE, the Deepin Desktop Environment. plugin-deepinid is a plugin in dde-control-center, which provides the deepinid cloud service. Prior to 6.1.80, plugin-deepinid is configured to skip TLS certificate verification w…
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Medium 6.2
Improper Certificate Validation in rfc3161-client
rfc3161-client is a Python library implementing the Time-Stamp Protocol (TSP) described in RFC 3161. Prior to 1.0.6, an Authorization Bypass vulnerability in rfc3161-client's signature verification allows any attacker to impersonate a trusted TimeStamping Aut…
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Medium 5.9
Tesla Fleet Telemetry allows spoofing telemetry for arbitrary vehicles via compromised vehicle credentials
### Summary A vulnerability in vehicle authentication allows threat actor with valid client credentials (i.e., a private key and certificate from a rooted infotainment system) to impersonate arbitrary VINs when authenticating to the telemetry server. ### Impa…
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Medium 6.5
Cisco Nexus Dashboard Configuration REST API Unauthorized Access Vulnerability
A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information. This vulnerability exists because authenticati…
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Medium 6.5
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.
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Medium 4.8CVE-2026-32794 Public exploit
Apache Airflow Provider for Databricks: TLS Certificate Verification Disabled in Databricks Provider K8s Token Exchange
Improper Certificate Validation vulnerability in Apache Airflow Provider for Databricks. Provider code did not validate certificates for connections to Databricks back-end which could result in a man-of-a-middle attack that traffic is intercepted and manipula…
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Medium 5.9
Botan: Case-Insensitive CN Values Bypass DNS excludedSubtrees Name Constraints (RFC 5280 Violation)
Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of allowable DNS names, if no subject alternative name is defined in the end-entity certificate Botan wo…
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Medium 4.8
Wazuh Provisioning Scripts / Build Infrastructure Improper Certificate Validation leading to MITM and RCE
Wazuh provisioning scripts and Dockerfiles contain an insecure transport vulnerability where curl is invoked with the -k/--insecure flag, disabling SSL/TLS certificate validation. Attackers with network access can perform man-in-the-middle attacks to intercep…
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Medium 5.7
Incus does not verify combined fingerprint when downloading images from simplestreams servers
Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances expos…
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Medium 4.2
NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using mTLS for client identity, with `verify_and_map` to derive a NATS identity from the client certificate's Subject DN…
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Medium 6.8
mod_gnutls missing key purpose check in client certificate verification
Mod_gnutls is a TLS module for Apache HTTPD based on GnuTLS. Prior to version 0.13.0, code for client certificate verification did not check the key purpose as set in the Extended Key Usage extension. An attacker with access to the private key for a valid cer…
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Medium 4.8
Terraform Provider for ArgoCD has possible exposure to GO-2026-4337 / CVE-2025-68121
### Summary The terraform-provider-argocd might have been vulnerable to GO-2026-4337 / CVE-2025-68121 ("Unexpected session resumption in crypto/tls"). ### Details See https://pkg.go.dev/vuln/GO-2026-4337 for the upstream vulnerability. Provider versions start…
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Medium 5.0
JumpServer Improper Certificate Validation in Custom SMS API Client
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an atta…
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Medium 5.3
An improper certificate validation vulnerability was reported in the Lenovo Filez application that could allow a user c…
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Medium 5.5
Acrobat Reader | Improper Certificate Validation (CWE-295)
Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to spoof the identity o…
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Medium 6.3
A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 thro…
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Medium 6.5
Taipower｜Taipower APP(Android) - Improper Certificate Validation
Taipower APP for Andorid developed by Taipower has an Improper Certificate Validation vulnerability. When establishing an HTTPS connection with the server, the application fails to verify the server-side TLS/SSL certificate. This flaw allows an unauthenticate…
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Medium 5.9
Apache ZooKeeper: Reverse-DNS fallback enables hostname verification bypass in ZooKeeper ZKTrustManager
Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails, allowing attackers who control or spoof PTR records to impersonate ZooKeeper servers or clients with a valid certificate for the PTR name. I…
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Medium 6.5
Lack of TLS certificate validation when connecting Arc to a Guardian or CMC, in Arc before v2.2.0
The server certificate was not verified when an Arc agent connected to a Guardian or CMC. A malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of t…
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Medium —
OpenClaw affected by iMessage remote attachment SCP hardening (strict host-key checks and remoteHost validation)
## Summary Remote iMessage attachment fetches used SCP with trust-on-first-use host-key behavior and accepted unvalidated remote host tokens. Before the fix: - SCP used `StrictHostKeyChecking=accept-new` in the remote attachment path. - `channels.imessage.rem…