CVE-2026-45811

CVE-2026-45811: Buffer Copy without Checking Size of Input in Apache NimBLE's HCI socket transport allows a buffer overflow because the received HCI event might not fit the configured event pool. Affects NimBLE up to version 1.9.0; upgrade to 1.10.0 to fix. Exploitation requires either a misconfi...

DEBIAN-CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

UBUNTU-CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

EUVD-2026-48479

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

CVE-2026-66141

Affected software : Exim before 4.99.5. Vulnerability : .forward privilege escalation due to mishandling of force_command for a pipe transport. Root cause : improper handling of force_command in a pipe transport within Exim, enabling a local attacker to escalate privileges. Impact : high severity...

CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because forcecommand for a pipe transport is mishandled...

SUSE CVE-2026-16317

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...

SUSE CVE-2026-16318

The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2nalloc instead of s2nrealloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2nalloc zeroes...

PT-2026-64235

Exim before 4.99.5 allows .forward privilege escalation because force command for a pipe transport is mishandled...

EUVD-2026-48424

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in internal/web/ or internal/api/ set the standard browser-security headers. grep for Content-Security-Policy, X-Frame-Options, Strict-Transport-Security,...

CVE-2026-47723 nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in internal/web/ or internal/api/ set the standard browser-security headers. grep for Content-Security-Policy, X-Frame-Options, Strict-Transport-Security,...

EUVD-2026-48375

An unauthenticated attacker could trigger an Out of Memory condition to crash the Java process for RHCS by repeatedly sending HTTP requests to the TLS endpoint. Depending on how the RHCS server is configured, a manual intervention to restart it may prove necessary...

Important: Red Hat Security Advisory: java-1.8.0-openjdk security update

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8...

openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing

A flaw was found in OpenSSL. A remote attacker could exploit this vulnerability by sending a specially crafted Cryptographic Message Syntax CMS EnvelopedData message. During the processing of a KeyTransportRecipientInfo with RSA-OAEP encryption, the system attempts to access an optional parameter...

PYSEC-2026-3483 MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

PYSEC-2026-3482 MCP Python SDK: HTTP transports serve session requests without verifying the authenticated principal

Summary In affected versions, the SSE and Streamable HTTP server transports routed incoming requests to an existing session based only on the session identifier, without verifying that the request was authenticated as the same principal that created the session. Anyone who learned or guessed a...

MCP Python SDK: WebSocket server transport does not support Host/Origin validation

SummaryIn affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...