Search Results (1791 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2026-20184 1 Cisco 1 Webex Meetings 2026-04-17 9.8 Critical
A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. A successful exploit could have allowed the attacker to gain unauthorized access to legitimate Cisco Webex services.
CVE-2026-3336 2 Amazon, Aws 3 Aws-lc-sys, Aws Libcrypto, Aws-lc 2026-04-17 7.5 High
Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
CVE-2026-24281 1 Apache 1 Zookeeper 2026-04-17 5.9 Medium
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. It's important to note that attacker must present a certificate which is trusted by ZKTrustManager which makes the attack vector harder to exploit. Users are recommended to upgrade to version 3.8.6 or 3.9.5, which fixes this issue by introducing a new configuration option to disable reverse DNS lookup in client and quorum protocols.
CVE-2026-32281 2 Go Standard Library, Golang 2 Crypto/x509, Go 2026-04-17 7.5 High
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
CVE-2026-29140 1 Seppmail 2 Secure Email Gateway, Seppmail Secure Email Gateway 2026-04-16 5.3 Medium
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to cause attacker-controlled certificates to be used for future encryption to a victim by adding the certificates to S/MIME signatures.
CVE-2026-1531 1 Redhat 4 Satellite, Satellite Capsule, Satellite Maintenance and 1 more 2026-04-16 8.1 High
A flaw was found in foreman_kubevirt. When configuring the connection to OpenShift, the system disables SSL verification if a Certificate Authority (CA) certificate is not explicitly set. This insecure default allows a remote attacker, capable of intercepting network traffic between Satellite and OpenShift, to perform a Man-in-the-Middle (MITM) attack. Such an attack could lead to the disclosure or alteration of sensitive information.
CVE-2026-2748 1 Seppmail 2 Seppmail, Seppmail Secure Email Gateway 2026-04-16 5.3 Medium
SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing.
CVE-2026-30840 2 Ellite, Wallosapp 2 Wallos, Wallos 2026-04-16 N/A
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.
CVE-2026-1530 1 Redhat 4 Satellite, Satellite Capsule, Satellite Maintenance and 1 more 2026-04-16 8.1 High
A flaw was found in fog-kubevirt. This vulnerability allows a remote attacker to perform a Man-in-the-Middle (MITM) attack due to disabled certificate validation. This enables the attacker to intercept and potentially alter sensitive communications between Satellite and OpenShift, resulting in information disclosure and data integrity compromise.
CVE-2026-24734 2 Apache, Apache Tomcat 3 Tomcat, Tomcat Native, Apache Tomcat 2026-04-16 7.4 High
Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This issue affects Apache Tomcat Native:  from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114. The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.
CVE-2026-3822 1 Taipower 1 Taipower App 2026-04-16 6.5 Medium
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 unauthenticated remote attackers to exploit the vulnerability to perform a Man-in-the-Middle (MITM) attack to read and tamper with network packets.
CVE-2026-27221 3 Adobe, Apple, Microsoft 6 Acrobat, Acrobat Dc, Acrobat Reader and 3 more 2026-04-16 5.5 Medium
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 of a signer. Exploitation of this issue requires user interaction.
CVE-2026-21228 1 Microsoft 1 Azure Local 2026-04-15 8.1 High
Improper certificate validation in Azure Local allows an unauthorized attacker to execute code over a network.
CVE-2025-9708 1 Kubernetes 1 Kubernetes 2026-04-15 6.8 Medium
A vulnerability exists in the Kubernetes C# client where the certificate validation logic accepts properly constructed certificates from any Certificate Authority (CA) without properly verifying the trust chain. This flaw allows a malicious actor to present a forged certificate and potentially intercept or manipulate communication with the Kubernetes API server, leading to possible man-in-the-middle attacks and API impersonation.
CVE-2024-47258 2026-04-15 8.1 High
2N Access Commander version 2.1 and prior is vulnerable in default settings to Man In The Middle attack due to not verifying certificates of 2N edge devices. 2N has currently released an updated version 3.3 of 2N Access Commander, with added Certificate Fingerprint Verification. Since version 2.2 of 2N Access Commander (released in February 2022) it is also possible to enforce TLS certificate validation.It is recommended that all customers update 2N Access Commander to the latest version and use one of two mentioned practices.
CVE-2024-45205 1 Ui 1 Unifi 2026-04-15 N/A
An Improper Certificate Validation on the UniFi iOS App managing a standalone UniFi Access Point (not using UniFi Network Application) could allow a malicious actor with access to an adjacent network to take control of this UniFi Access Point. Affected Products: UniFi iOS App (Version 10.17.7 and earlier) Mitigation: UniFi iOS App (Version 10.18.0 or later).
CVE-2025-65083 1 Tinexta Infocert 1 Gosign Desktop 2026-04-15 3.2 Low
GoSign Desktop through 2.4.1 disables TLS certificate validation when configured to use a proxy server. This can be problematic if the GoSign Desktop user selects an arbitrary proxy server without consideration of whether outbound HTTPS connections from the proxy server to Internet servers succeed even for untrusted or invalid server certificates. In this scenario (which is outside of the product's design objectives), integrity protection could be bypassed. In typical cases of a proxy server for outbound HTTPS traffic from an enterprise, those connections would not succeed. (Admittedly, the usual expectation is that a client application is configured to trust an enterprise CA and does not set SSL_VERIFY_NONE.) Also, it is of course unsafe to place ~/.gosign in the home directory of an untrusted user and then have other users execute downloaded files.
CVE-2024-54147 2026-04-15 6.8 Medium
Altair is a GraphQL client for all platforms. Prior to version 8.0.5, Altair GraphQL Client's desktop app does not validate HTTPS certificates allowing a man-in-the-middle to intercept all requests. Any Altair users on untrusted networks (eg. public wifi, malicious DNS servers) may have all GraphQL request and response headers and bodies fully compromised including authorization tokens. The attack also allows obtaining full access to any signed-in Altair GraphQL Cloud account and replacing payment checkout pages with a malicious website. Version 8.0.5 fixes the issue.
CVE-2025-6026 1 Lenovo 1 Universal Device Client 2026-04-15 3.1 Low
An improper certificate validation vulnerability was reported in the Lenovo Universal Device Client (UDC) that could allow a user capable of intercepting network traffic to obtain application metadata, including device information, geolocation, and telemetry data.
CVE-2025-58781 2026-04-15 N/A
WTW-EAGLE App does not properly validate server certificates, which may allow a man-in-the-middle attacker to monitor encrypted traffic.