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CVE-2026-33542 Média · 4.8 CWE-295 26/03/2026
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 exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.
CVE-2026-33308 Média · 5.9 CWE-295 24/03/2026
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 certificate issued by a CA trusted for TLS client authentication but designated for a different purpose could have used that certificate to improperly access resources requiring TLS client authentication. Server configurations that do not use client certificates (`GnuTLSClientVerify ignore`, the default) are not affected. The problem has been fixed in version 0.13.0 by rewriting certificate verification to use `gnutls_certificate_verify_peers()`, and requiring key purpose id-kp-clientAuth (also known as `tls_www_client` in GnuTLS) by default if the Extended Key Usage extension is present. The new `GnuTLSClientKeyPurpose` option allows overriding the expected key purpose if needed (please see the manual for details). Behavior for certificates without an Extended Key Usage extension is unchanged. If dedicated (sub-)CAs are used for issuing TLS client certificates only (not for any other purposes) the issue has no practical impact.
CVE-2026-4434 Alta · 8.1 CWE-295 20/03/2026
Improper Certificate Validation em Devolutions Devolutions Server
Improper certificate validation in the PAM propagation WinRM connections allows a network attacker to perform a man-in-the-middle attack via disabled TLS certificate verification.
CVE-2026-30836 Crítica · 10.0 CWE-295 19/03/2026
Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.
CVE-2026-4396 Alta · 8.1 CWE-295 18/03/2026
Improper Certificate Validation em Devolutions Hub Reporting Service
Improper certificate validation in Devolutions Hub Reporting Service 2025.3.1.1 and earlier allows a network attacker to perform a man-in-the-middle attack via disabled TLS certificate verification.
CVE-2026-32293 Baixa · 3.7 CWE-295 17/03/2026
GL-iNet Comet (GL-RM1) KVM insufficient certificate validation
The GL-iNet Comet (GL-RM1) KVM connects to a GL-iNet site during boot-up to provision client and CA certificates. The GL-RM1 does not verify certificates used for this connection, allowing an attacker-in-the-middle to serve invalid client and CA certificates. The GL-RM1 will attempt to use the invalid certificates and fail to connect to the legitimate GL-iNet KVM cloud service.
CVE-2026-32627 Alta · 8.1 CWE-295 16/03/2026
cpp-httplib has a Silent TLS Certificate Verification Bypass on HTTPS Redirect via Proxy
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and set_follow_location(true), any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new connection. The client will accept any certificate presented by the redirect target — expired, self-signed, or forged — without raising an error or notifying the application. A network attacker in a position to return a redirect response can fully intercept the follow-up HTTPS connection, including any credentials or session tokens in flight. This vulnerability is fixed in 0.37.2.
CVE-2026-31798 Média · 5.0 CWE-295 13/03/2026
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 attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts.
CVE-2026-2368 Alta · 7.1 CWE-295 11/03/2026
Improper Certificate Validation em Lenovo Filez
An improper certificate validation vulnerability was reported in the Lenovo Filez application that could allow a user capable of intercepting network traffic to execute arbitrary code.
CVE-2026-1068 Média · 5.3 CWE-295 11/03/2026
Improper Certificate Validation em Lenovo Filez
An improper certificate validation vulnerability was reported in the Lenovo Filez application that could allow a user capable of intercepting network traffic to obtain sensitive user data from the application.
CVE-2026-24508 Média · 5.5 CWE-295 11/03/2026
Improper Certificate Validation em Dell Alienware Command Center
Dell Alienware Command Center (AWCC), versions prior to 6.12.24.0, contain an Improper Certificate Validation vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Information exposure.
CVE-2024-14024 Média · 6.7 CWE-295 11/03/2026
Video Station
An improper certificate validation vulnerability has been reported to affect Video Station. If an attacker gains local network access who have also gained an administrator account, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the following version: Video Station 5.8.2 and later
CVE-2026-27221 Média · 5.5 CWE-295 10/03/2026
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 of a signer. Exploitation of this issue requires user interaction.
CVE-2025-68482 Média · 5.9 CWE-295 10/03/2026
Improper Certificate Validation em Fortinet Fortimanager
A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to view confidential information via a man in the middle [MiTM] attack.
CVE-2026-3822 Média · 4.8 CWE-295 09/03/2026
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 unauthenticated remote attackers to exploit the vulnerability to perform a Man-in-the-Middle (MITM) attack to read and tamper with network packets.
CVE-2026-24281 Alta · 7.4 CWE-295 07/03/2026
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. 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-2026-30840 Alta · 8.8 CWE-295 07/03/2026
Wallos: Server-Side Request Forgery (SSRF) in Notification Testers
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-2026-27138 Média · 5.9 CWE-295 06/03/2026
Panic in name constraint checking for malformed certificates in crypto/x509
Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.
CVE-2026-27137 Alta · 7.5 CWE-295 06/03/2026
Incorrect enforcement of email constraints in crypto/x509
When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
CVE-2025-40896 Média · 4.8 CWE-295 04/03/2026
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 the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC.
CVE-2026-2748 Média · 5.3 CWE-295 04/03/2026
S/MIME Certificate Subject Whitespace
SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing.
CVE-2026-3336 Alta · 7.5 CWE-295 02/03/2026
PKCS7_verify Certificate Chain Validation Bypass in AWS-LC
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-2025-67601 Média · 4.8 CWE-295 25/02/2026
Rancher CLI skips TLS verification on Rancher CLI login command
A vulnerability has been identified within Rancher Manager, where using self-signed CA certificates and passing the -skip-verify flag to the Rancher CLI login command without also passing the –cacert flag results in the CLI attempting to fetch CA certificates stored in Rancher’s setting cacerts.
CVE-2026-3100 Média · 6.5 CWE-295 25/02/2026
An improper certificate validation vulnerability was found in the FTP Backup on the ADM.
The FTP Backup on the ADM will not properly strictly enforce TLS certificate verification while connecting to an FTP server using FTPES/FTPS. An improper validated TLS/SSL certificates allows a remote attacker can intercept network traffic to perform a Man-in-the-Middle (MitM) attack, which may intercept, modify, or obtain sensitive information such as authentication credentials and backup data. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.2.RE51.
CVE-2025-67752 Alta · 8.1 CWE-295 24/02/2026
OpenEMR Has Disabled SSL Certificate Verification in HTTP Client
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 7.0.4, OpenEMR's HTTP client wrapper (`oeHttp`/`oeHttpRequest`) disables SSL/TLS certificate verification by default (`verify: false`), making all external HTTPS connections vulnerable to man-in-the-middle (MITM) attacks. This affects communication with government healthcare APIs and user-configurable external services, potentially exposing Protected Health Information (PHI). Version 7.0.4 fixes the issue.