CVE-2026-20354

CVE-2026-20354 affects the S/MIME decryption functionality of Cisco Secure Email . The root cause is insufficient validation of message integrity , allowing an unauthenticated remote attacker to use a man-in-the-middle technique to intercept and modify traffic between email gateways. A successful...

Cisco Secure Email Secure/Multipurpose Internet Mail Extensions Ciphertext Decryption Vulnerabilities

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

Linux Distros Unpatched Vulnerability : CVE-2026-55856

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, when a Java...

PT-2026-84814

Name of the Vulnerable Software and Affected Versions Cisco Secure Email affected versions not specified Description Insufficient validation of message integrity in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality allows an unauthenticated remote attacker to recove...

CVE-2026-73756

A vulnerability in an API endpoint of AOS-CX could allow a remote unauthenticated attacker to obtain sensitive information via a man-in-the-middle attack. Successful exploitation allows an attacker to retrieve data which could be used to further compromise the confidentiality of the affected syst...

CVE-2026-84366 Scrapy: S3DownloadHandler sends signed S3 requests over plaintext HTTP by default

Scrapy is a high-level web crawling and scraping framework for Python. Prior to 2.17.0, in scrapy/core/downloader/handlers/s3.py, Scrapy's S3DownloadHandler converts an S3-scheme bucket and key request into a plaintext HTTP request to the corresponding S3 endpoint unless request.meta"issecure" is...

CVE-2026-73756

CVE-2026-73756 affects an API endpoint in AOS-CX , allowing a remote unauthenticated attacker to obtain sensitive information through a man-in-the-middle (MITM) attack . The retrieved data could be leveraged to further compromise the confidentiality of the affected system. The CVSS 3.1 score is 5...

CVE-2026-63310

NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader module. Attackers can perform man-in-the-middle attacks or DNS poisoning to inject malicious package contents that are extracted without validation. Mitigation Upgrade the nltk...

Linux Distros Unpatched Vulnerability : CVE-2026-18654

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Key exchange without entity authentication in the EMR SSH helper commands in Amazon AWS CLI before 1.45.28 and AWS CLI v2 before 2.35.3 might allow...

CVE-2026-82662

Nodemailer before 8.0.8 disables TLS certificate verification in lib/fetch/index.js through rejectUnauthorized: false, allowing attackers to intercept OAuth2 token requests. Attackers in a machine-in-the-middle position can capture OAuth client secrets, refresh tokens, and access tokens transmitt...

CVE-2026-82662

Nodemailer before 8.0.8 disables TLS certificate verification in lib/fetch/index.js through rejectUnauthorized: false, allowing attackers to intercept OAuth2 token requests. Attackers in a machine-in-the-middle position can capture OAuth client secrets, refresh tokens, and access tokens transmitt...

EUVD-2026-68440

Nodemailer before 8.0.8 disables TLS certificate verification in lib/fetch/index.js through rejectUnauthorized: false, allowing attackers to intercept OAuth2 token requests. Attackers in a machine-in-the-middle position can capture OAuth client secrets, refresh tokens, and access tokens transmitt...

open-isns: open-iscsi: Denial of Service via double-free in iSNS attribute decoder

A flaw was found in open-iscsi. An unauthenticated man-in-the-middle MITM attacker can exploit a double-free vulnerability in the iSNS attribute decoder. This can lead to a denial of service DoS condition, making the affected system unavailable...

ROS-20260831-73-0012

The vulnerability of the SimpleTrustManagerFactory component in the TSL client of the networking application development framework for Netty involves errors in verifying the cryptographic signature. Exploiting this vulnerability could allow a malicious actor to carry out a “man-in-the-middle”...

CVE-2026-55857

MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, PAM dialog authentication can be coerced into transmitting the account password over an insecure connection. The mysqlclearpassword plugin is gated behin...

Insufficiently Protected Credentials

Overview Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the SendPamAuthPacketFactory process. An attacker can obtain sensitive authentication credentials by intercepting network traffic or acting as a man-in-the-middle server during the authentication...

GHSA-G9JJ-CGMH-9F38 MariaDB has cleartext password disclosure to a MITM on the initial-handshake

Summary When a Java application connects with sslMode=verify-full or verify-ca and a password but does not pin a server certificate, Connector/J deliberately accepts an untrusted/self-signed certificate at the TLS layer the "MITM-proof without a CA" feature and proves the server's identity...

CVE-2026-55856 MariaDB Connector/J: Cleartext password disclosure to a MITM on the initial-handshake

MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, when a Java application connects with sslMode=verify-full or sslMode=verify-ca, supplies a password, and does not configure serverSslCert or trustStore,...

CVE-2025-64649

IBM Concert versions 1.0.0 through 2.3.1 are affected by improper certificate validation , allowing a remote attacker to perform unauthorized actions via man-in-the-middle techniques. The vulnerability carries a CVSS 3.1 score of 5.9 (MEDIUM) with a high attack complexity, no privileges required,...

CVE-2025-36290 IBM Integrated Analytics System (IIAS) is affected by improper SSL/TLS certificate validation vulnerability in JWT service component

IBM Integrated Analytics System 1.0.0.0 through 1.0.31.0 does not validate or improperly validates TLS certificate validation, which could allow an attacker to obtain sensitive information using man in the middle techniques...