CVE-2026-76816 Netty: MQTT Topic Name and Client ID Validation Bypass

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.17.Final, MqttEncoder does not validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null bytes in MQTT UTF-8 string fields and...

CVE-2026-76816

Netty , an asynchronous event-driven network framework, contains a validation bypass in its MqttEncoder prior to versions 4.1.137.Final and 4.2.17.Final . The encoder fails to validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null by...

CVE-2026-76816

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.17.Final, MqttEncoder does not validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null bytes in MQTT UTF-8 string fields and...

PT-2026-81028

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.137.Final Netty versions prior to 4.2.17.Final Description Netty is an asynchronous, event-driven network application framework. The MqttEncoder does not validate client identifiers, will topics, usernames, and...

Null Byte Interaction Error (Poison Null Byte)

Overview Affected versions of this package are vulnerable to Null Byte Interaction Error Poison Null Byte via the Socks4ClientEncoder and Socks5ClientEncoder in codec-socks. An attacker can truncate or alter encoded SOCKS requests by supplying userId, destination host, username, or password value...

CVE-2026-62380

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

CVE-2026-62380

Netty (io.netty:netty-codec-socks) versions 4.1.x through 4.1.136.Final and 4.2.0.Final through 4.2.16.Final contain null byte and CRLF injection vulnerabilities in the Socks4ClientEncoder and Socks5ClientEncoder . The encoders fail to validate domain address and authentication (username/password...

EUVD-2026-64272

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

CVE-2026-62380 Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

CVE-2026-62380 Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

CVE-2026-62380 Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

CVE-2026-62380: Null Byte Interaction Error (Poison Null Byte)

Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 Socks4ClientEncoder and SOCKS5 Socks5ClientEncoder client encoders, which fail to validate domain address and...

Linux Distros Unpatched Vulnerability : CVE-2026-62380

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection...

PT-2026-79547

Name of the Vulnerable Software and Affected Versions Netty io.netty:netty-codec-socks versions 4.2.0.Final through 4.2.16.Final Netty io.netty:netty-codec-socks versions 4.1.x through 4.1.136.Final Description Null byte, CRLF, and credential injection issues exist in the SOCKS4 Socks4ClientEncod...

EUVD-2026-63508

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdnsserverrequestformatresponse. The final-label check...

CVE-2026-76354: Improper Neutralization of Null Byte or NUL Character

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could affect system integrity and availability by sending a crafted Representational State Transfer REST API request that deletes or temporarily overwrites files...

UBUNTU-CVE-2026-53533

aiosmtplib is an asynchronous SMTP client for use with asyncio. Prior to 5.1.1, SMTP.mail, SMTP.rcpt, SMTP.vrfy, and SMTP.expn send caller-supplied addresses without rejecting embedded CR or LF bytes. Data after the line break is framed as additional standalone SMTP command lines, allowing an...

GO-2026-6161 free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure in github.com/free5gc/ausf

free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure in github.com/free5gc/ausf...

ANT-2026-3JR8RVFB · Leptonica · Heap Buffer Underflow

heap-buffer-overflow medium Severity Claude medium · Security research firm medium · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Trail of Bits. ANT-2026-3JR8RVFB: Heap buffer underwrite via negativ...

JLSEC-2026-1277

GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignored, i.e., a "Transfer-Encoding\0: chunked" header is treated the same as a "Transfer-Encoding: chunked" header...