CVE-2026-54891 Plaintext APPLICATION_DATA injected during TLS handshake delivered to client application post-handshake in ssl

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

EEF-CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

Summary The Erlang/OTP ssl application does not validate that the PSK identity list and binder list carried in a TLS 1.3 ClientHello pre-shared key extension have equal length before passing them to the session ticket handler. In tls\handshake\1\3:handle\pre\shared\key/3, an OfferedPreSharedKeys...

CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

libcurl: libcurl: Security feature bypass due to improper mTLS connection reuse

A flaw was found in curl. The libcurl library, used for transferring data with URLs, could improperly reuse existing network connections. This occurred even when changes to mutual Transport Layer Security mTLS settings, particularly those for client certificates, should have prevented such reuse...

curl: curl: Insecure connection establishment due to TLS configuration mismatch

A flaw was found in curl. When a new data transfer attempts to upgrade its connection using STARTTLS, it may incorrectly reuse an existing live connection. This reuse can occur even if the Transport Layer Security TLS configuration of the new transfer does not match the existing connection,...

PYSEC-2026-683 Improper Access Control in MySQL Connector Python

Vulnerability in the MySQL Connectors component of Oracle MySQL subcomponent: Connector/Python. Supported versions that are affected are 8.0.13 and prior and 2.1.8 and prior. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Connector...

[SECURITY] Fedora 44 Update: caddy-2.10.2-9.fc44

Caddy is an extensible server platform that uses TLS by default...

PT-2026-55875

Name of the Vulnerable Software and Affected Versions PHP version 8.2 Description A failure to establish a TLS handshake the process where a client and server authenticate each other and establish encryption keys with a remote server can lead to a Denial of Service DoS condition. Recommendations ...

ruby:3.3 security update

ruby 3.3.10-7 - Fix DoS via crafted IMAP responses in net-imap. CVE-2026-42245 Resolves: RHEL-181693 - Fix information disclosure via MITM attack bypassing TLS in net-imap. CVE-2026-42246 Resolves: RHEL-181779 - Fix command injection via Symbol arguments in net-imap. CVE-2026-42258 Resolves:...

PT-2026-57584

Name of the Vulnerable Software and Affected Versions OpenVPN versions 2.1.0 through 2.6.20 OpenVPN versions 2.7 alpha1 through 2.7.4 Description An off-by-one buffer write occurs during NTLM proxy authentication. This 1-byte buffer overrun can be triggered by a malicious proxy server sending a...

PT-2026-55269

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 20.0 through 29.0.2 Erlang/OTP versions 28.0 through 28.5.0.2 Erlang/OTP versions 27.0 through 27.3.4.13 ssl versions 8.2 through 11.7.2 ssl versions 11.6.0 through 11.6.0.2 ssl versions 11.2.0 through 11.2.12.9 Description...

SUSE SLES12 Security Update : curl (SUSE-SU-2026:2703-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2703-1 advisory. This update for curl fixes the following issues - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545: wrong...

Not Failing Securely ('Failing Open')

Overview Affected versions of this package are vulnerable to Not Failing Securely 'Failing Open' in the TlsServerEndpoint process when a server presents an X.509 certificate using a modern signature algorithm lacking traditional naming structures. An attacker can bypass strict client-side...

GHSA-XF85-363P-868W oras-go: Malicious registry can hijack Bearer token realm to exfiltrate credentials and refresh tokens

Summary oras-go's auth.Client follows the realm URL from a registry's WWW-Authenticate: Bearer challenge without validating its scheme or host. The realm field is server-controlled by design in the OCI/distribution spec — registries legitimately point token requests at a separate auth endpoint e....

QUIC has Broken TLS verification

Impact The QUIC client did not authenticate the server during the TLS 1.3 handshake. The CertificateVerify signature was not checked, the certificate chain was not validated, and the hostname was not compared against the certificate, so verify was effectively a no-op on the client. A...

Important: Red Hat Security Advisory: gnutls security update

An update for gnutls is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages

A flaw was found in the crypto/tls package within the Go golang standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock,...

Important: Red Hat Security Advisory: podman security update

An update for podman is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Important: Red Hat Security Advisory: skopeo security update

An update for skopeo is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Important: Red Hat Security Advisory: buildah security, bug fix, and enhancement update

An update for buildah is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...