CVE-2026-56741 JLine: Unauthenticated Remote DoS via Unbounded Telnet NAWS Terminal Geometry

JLine is a Java library for handling console input. Prior to 3.30.14, 4.0.16, and 4.2.1, the JLine3 Telnet server remote-telnet module does not apply an upper bound to terminal dimensions received via the Telnet NAWS option, and TelnetIO.handleNAWS in TelnetIO.java:856-879 reads client-supplied...

SUSE-SU-2026:22562-1 Security update for jline3

This update for jline3 fixes the following issues: Changes in jline3: unauthenticated remote memory exhaustion via unbounded Telnet 'NEW-ENVIRON variables bsc1269021...

OPENSUSE-SU-2026:21221-1 Security update for jline3

This update for jline3 fixes the following issues: Changes in jline3: unauthenticated remote memory exhaustion via unbounded Telnet 'NEW-ENVIRON variables bsc1269021...

openSUSE 16: jline3 / jline3-builtins / jline3-console / jline3-console-ui / etc (openSUSE-SU-2026:21221-1)

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:21221-1 advisory. Changes in jline3: unauthenticated remote memory exhaustion via unbounded Telnet 'NEW-ENVIRON variables bsc1269021 Tenable has extracted the preceding...

CVE-2026-13589

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated...

EUVD-2026-40150

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated...

CVE-2026-13589

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated...

CVE-2026-13589

A vulnerability affects seladb PcapPlusPlus 25.05, specifically the Telnet Subnegotiation Packet Handler: pcpp::TelnetLayer::getSubCommand in Packet++/src/TelnetLayer.cpp. The issue is a heap-based buffer overflow that can be triggered remotely. The reported attack complexity is high, with no aut...

CVE-2026-13589 seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated...

CVE-2026-13589 seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated...

Tenda-Smart-Camera-Vulnerability

Tenda-...

Astra Linux – Vulnerability in inetutils

In GNU inetutils, the telnet utility in version 2.7 allows servers to read arbitrary environment variables from clients using the NEWENVIRON SENDUSERVAR function...

CVE-2026-49345 Mercator CVE Configuration Vulnerable to Server-Side Request Forgery (SSRF)

Mercator is an open source web application that enables mapping of the information system. Prior to version 2025.05.19, a Server-Side Request Forgery SSRF vulnerability exists in Mercator's CVE configuration panel /admin/config/parameters. The testProvider method in ConfigurationController passes...

CVE-2026-49345

CVE-2026-49345 affects Mercator before 2025.05.19. The SSRF flaw resides in the CVE configuration panel (/admin/config/parameters) where ConfigurationController.testProvider() passes user input directly to curl_init() without validating scheme/host/IP. An authenticated user with configure permiss...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via readNEVariables. An attacker can exhaust the JVM heap memory by sending a large number of unique Telnet NEW-ENVIRON variable pairs before the terminating IAC SE byte, resulting in...

JLine3 Telnet server: Unauthenticated Remote Memory Exhaustion via Unbounded Telnet NEW-ENVIRON Variables

Summary The JLine3 Telnet server remote-telnet module does not limit the number of environment variables a client may inject via the Telnet NEW-ENVIRON option. An unauthenticated attacker can flood the server with a large number of unique variable pairs before sending the terminating IAC SE byte,...

GHSA-47QP-HQVX-6R3F JLine3 Telnet server: Unauthenticated Remote Memory Exhaustion via Unbounded Telnet NEW-ENVIRON Variables

Summary The JLine3 Telnet server remote-telnet module does not limit the number of environment variables a client may inject via the Telnet NEW-ENVIRON option. An unauthenticated attacker can flood the server with a large number of unique variable pairs before sending the terminating IAC SE byte,...

JLine3 Telnet server: Unauthenticated Remote DoS via Unbounded Telnet NAWS Terminal Geometry

Summary The JLine3 Telnet server remote-telnet module does not apply an upper bound to terminal dimensions received via the Telnet NAWS Negotiate About Window Size option. An unauthenticated remote attacker can send a NAWS subnegotiation advertising a 65535×65535 terminal and repeatedly alternate...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the TelnetIO.handleNAWS method, which does not check for upper bounds on requested dimensions. An attacker can cause CPU exhaustion by large NAWS Negotiate About Window Size...

GHSA-2R2C-CX56-8933 JLine3 Telnet server: Unauthenticated Remote DoS via Unbounded Telnet NAWS Terminal Geometry

Summary The JLine3 Telnet server remote-telnet module does not apply an upper bound to terminal dimensions received via the Telnet NAWS Negotiate About Window Size option. An unauthenticated remote attacker can send a NAWS subnegotiation advertising a 65535×65535 terminal and repeatedly alternate...