CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898

Technical details for CVE-2026-59898 are not publicly available in the provided documents. Monitor for updates.

CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

EUVD-2026-50444

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898 Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

CVE-2026-59898

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending "Sec-WebSocket-Version: 7" and omitting "Connection: Upgrade" / "Upgrade: websocket" headers...

CVE-2026-59898 Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

io.netty/netty-codec-http: Netty: Protocol version confusion in netty-codec-http (WebSocket)

A flaw was found in netty-codec-http. The WebSocket handshaker in this component fails to properly validate protocol version information during the WebSocket upgrade process. A remote attacker can exploit this vulnerability by manipulating the WebSocket handshake, leading to a bypass of security...

PT-2026-65916

VaahCMS versions 2.0.0 through 2.3.4 contain a malicious obfuscated JavaScript payload embedded in the Blade template responsible for rendering security OTP emails, allowing remote attackers to execute unauthorized code in any browser that renders the affected email template with JavaScript...

CVE-2026-67595: Embedded Malicious Code

VaahCMS versions 2.0.0 through 2.3.4 contain a malicious obfuscated JavaScript payload embedded in the Blade template responsible for rendering security OTP emails, allowing remote attackers to execute unauthorized code in any browser that renders the affected email template with JavaScript...

CVE-2026-13308: Integer Underflow (Wrap or Wraparound)

Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Elite Home EV chargers. Authentication is not required to exploit this...

VulnCheck KEV: CVE-2026-67595

VaahCMS versions 2.0.0 through 2.3.4 contain a malicious obfuscated JavaScript payload embedded in the Blade template responsible for rendering security OTP emails, allowing remote attackers to execute unauthorized code in any browser that renders the affected email template with JavaScript...

CVE-2026-59898: Inconsistent Interpretation of HTTP Requests

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 or V08 handshaker by sending Sec-WebSocket-Version: 7 and omitting Connection: Upgrade / Upgrade: websocket headers,...

TencentOS Server 4: nodejs20 (TSSA-2026:0665)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0665 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

FreeBSD : mailpit -- WebSocket origin check bypass via percent-encoded path (52a3f202-8a77-11f1-ac5d-0897988a1c07)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 52a3f202-8a77-11f1-ac5d-0897988a1c07 advisory. Mailpit author reports: The cross-site WebSocket hijacking fix was reimplemented as an origin check gat...

Linux Distros Unpatched Vulnerability : CVE-2026-59898

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade...

Allocation of Resources Without Limits or Throttling

Overview org.apache.tomcat:tomcat-websocket is a Tomcat WebSocket JSR356 implementation. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WebSocket chat example. An attacker can exhaust system resources by sending a large number of...

Allocation of Resources Without Limits or Throttling

Overview org.apache.tomcat:tomcat is an implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WebSocket chat example. An attack...

org.apache.tomee.bom:tomee-microprofile (>=10.0.0-m2, <=10.0.0), org.apache.tomee.bom:tomee-plume (>=10.0.0-m2, <=10.0.0) +13 more potentially affected by CVE-2026-66299 via org.apache.tomcat:tomcat-websocket (>=10.1.25, <=10.1.57)

org.apache.tomcat:tomcat-websocket MAVEN version =10.1.25, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.0.0-m2, =10.2.0 Source cves: CVE-2026-66299 Source advisory:...