File Browser: Command Injection via Authentication Hook Shell Substitution (Pre-Authentication RCE)

Overview The Hook Authentication feature in File Browser allows administrators to delegate login verification to an external shell command. User-supplied credentials username and password are interpolated into this command string using os.Expand without sanitization. An unauthenticated remote...

EUVD-2026-39510

File Browser: Command Injection via Authentication Hook Shell Substitution Pre-Authentication RCE...

GHSA-M93H-4HW7-5QCM File Browser: Command Injection via Authentication Hook Shell Substitution (Pre-Authentication RCE)

Overview The Hook Authentication feature in File Browser allows administrators to delegate login verification to an external shell command. User-supplied credentials username and password are interpolated into this command string using os.Expand without sanitization. An unauthenticated remote...

CVE-2026-8609 Pre-authentication denial of service via the OAuth login route

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance denial of service...

CVE-2026-8609 Pre-authentication denial of service via the OAuth login route

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance denial of service...

CVE-2026-8609

Grafana CVE-2026-8609: an unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth and eventual denial of service (crash). The connected sources (NVD, CIRCL sighting, AttackKB, Alpine Linux advisory, CVE listings, vuln enrichment...

CVE-2026-8609 Pre-authentication denial of service via the OAuth login route

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance denial of service...

JLSEC-2026-660 libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service...

libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSHMSGEXTINFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can s...

Vulnerabilities found in BeyondTrust Remote Support and Privileged Remote Access

BeyondTrust has identified vulnerabilities in the products Remote Support and Privileged Remote Access. These vulnerabilities involve multiple aspects of these products. There is a pre-authentication vulnerability that allows a network-based attacker to bypass authentication checks without prior...

CVE-2026-54772

CoreWCF (net.tcp/net.pipe/net.uds) prior to versions 1.8.1 and 1.9.1 is affected. An unauthenticated remote attacker can trigger premature EOF handling in the framing handshake, causing one server thread-pool worker to be pinned at 100% CPU per connection and potentially exhausting CPU with multi...

CVE-2026-54772 CoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshake

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, an unauthenticated remote attacker that can reach a NetTcpBinding, NetNamedPipeBinding, or UnixDomainSocketBinding endpoint can trigger premature EOF handling in the CoreWCF...

CVE-2026-54772 CoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshake

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, an unauthenticated remote attacker that can reach a NetTcpBinding, NetNamedPipeBinding, or UnixDomainSocketBinding endpoint can trigger premature EOF handling in the CoreWCF...

CVE-2026-58250

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-58210 NATS Server: MQTT partial CONNECT packets can exhaust pre-auth memory

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, an unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completed, consuming server memory while the...

CVE-2026-58210

CVE-2026-58210 affects NATS Server prior to versions 2.14.3 and 2.12.12. An unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completes, exhausting memory due to the parser waiting for the advertised MQTT packet length. The is...

CVE-2026-58250

CVE-2026-58250 affects NATS Server: an unauthenticated peer with access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by sending repeated leafnode INFO messages. The issue is fixed in versions 2.12.8 and 2.11.17 . Exploitat...

CVE-2026-58250

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-58250 NATS Server: Pre-auth server crash via double INFO in leafnode handshake

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-58250 NATS Server: Pre-auth server crash via double INFO in leafnode handshake

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-59803

rpcx through 1.9.3, fixed in commit 047aec1, contains a denial-of-service vulnerability in protocol.Message.Decode protocol/message.go. When a message has the compression flag set, the payload is gzip-decompressed via util.Unzip with no limit on the decompressed output size. The only built-in siz...