RLSA-2026:39575 Important: cifs-utils security, bug fix, and enhancement update

The SMB/CIFS protocol is a standard file sharing protocol widely deployed on Microsoft Windows machines. The cifs-utils packages contain tools for mounting shares on Linux using the SMB/CIFS protocol. The tools in this package work in conjunction with support in the kernel to allow one to mount a...

OpenStack oslo.messaging does not verify RabbitMQ broker hostname during TLS handshake

An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When sslcafile is configured, the driver enables certificate chain validation but does not pass the expect...

PYSEC-2026-3492 OpenStack oslo.messaging does not verify RabbitMQ broker hostname during TLS handshake

An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When sslcafile is configured, the driver enables certificate chain validation but does not pass the expect...

Synology Man-In-The-Middle

Synology stale DNS allows practical interception of traffic from vulnerable DSM clients, making older vulnerabilities more practical to exploit...

gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name SAN could cause the validation process to incorrectly fall back to checking the Common Name CN field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to...

gnutls: gnutls: Security bypass due to incorrect name constraint handling

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities CAs only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate...

CVE-2026-16317

A flaw was found in s2n-tls, a Transport Layer Security TLS implementation. This vulnerability allows an active man-in-the-middle MITM attacker to silently discard individual application data records in TLS 1.3 connections. The issue stems from missing validation of the outer content type byte in...

Plone < 3.1.8 MitM

The version of Plone installed on the remote host is prior to 3.1.8. It is, therefore, affected by a man-in-the-middle vulnerability. Plone uses invariant data a client username and a server secret when calculating an HMAC-SHA1 value for an authentication cookie, which makes it easier for remote...

CVE-2026-16317 Silent Drop of TLS 1.3 Encrypted Records in s2n-tls

Missing validation of the outer contenttype byte on TLS 1.3 encrypted records in s2n-tls allows an active man-in-the-middle to silently discard individual application data records without either endpoint detecting the modification. RFC 8446 Section 5.2 requires that the outer contenttype of all...

EUVD-2026-41903

PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported certificate algorithms...

CVE-2026-56586

HCL IEM was affected with X-Content-Type-Options Header Missing. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and intercept sensitive data...

CVE-2026-56587

HCL IEM was affected with Strict transport security not enforced. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and compromise secure communications...

CVE-2026-56586 HCL IEM was affected with X-Content-Type-Options Header Missing

HCL IEM was affected with X-Content-Type-Options Header Missing. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and intercept sensitive data...

CVE-2026-56586

Technical details about CVE-2026-56586 are not publicly available in the provided documents. Monitor for updates from the vendor; no affected products, versions, or remediation details are specified here.

EUVD-2026-46274

HCL IEM was affected with Strict transport security not enforced. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and compromise secure communications...

CVE-2026-56587 HCL IEM was affected with Strict transport security not enforced

HCL IEM was affected with Strict transport security not enforced. It may enable attackers to perform SSL stripping or man-in-the-middle attacks and compromise secure communications...

CVE-2026-56587

CVE-2026-56587 (HCL IEM) : The issue arises from HTTPS Strict-Transport-Security not being enforced, potentially enabling SSL stripping or man-in-the-middle attacks and compromising secure communications. Documented impact: confidentiality at LOW, with no integrity/availability impact. CVSSv3.1 m...

CVE-2026-54291

A flaw was found in pgjdbc, an open-source PostgreSQL JDBC Driver. A remote attacker who can intercept a TLS Transport Layer Security connection can silently downgrade connections configured to require channel binding from SCRAM-SHA-256-PLUS to plain SCRAM-SHA-256. This downgrade bypasses the...

PT-2026-63278

Name of the Vulnerable Software and Affected Versions Gitea affected versions not specified Description The internal API HTTP client in modules/private/internal.go hardcodes TLSClientConfig.InsecureSkipVerify = true, which disables TLS certificate verification for outbound internal requests. When...

axios: Axios: Man-in-the-Middle (MITM) attack via Prototype Pollution

A flaw was found in Axios. This vulnerability, a Prototype Pollution "Gadget" attack, allows an attacker to escalate any existing Object.prototype pollution in an application's dependency tree into a full Man-in-the-Middle MITM attack. This enables the attacker to intercept, read, and modify all...