CVE-2021-44228

CVE-2021-44228 Apache Log4j 2 Vulnerable versions: Log4j versions prior to 2.15.0-rc2 are subject to a remote code execution vulnerability via the ldap JNDI parser. Goto issue reproduce 移步漏洞复现...

log4shell-poc

CVE-2021-44228 Log4Shell POC Overview Proof of Concept for Remote Code Execution via JNDI Injection vulnerability in Apache Log4j 2.14.1. Web Hacking Course - Week 11 Assignment. Environment Role| Software| Version ---|---|--- Victim Server| Spring Boot + Log4j| 2.6.1 + 2.14.1 Victim JDK| OpenJDK...

CVE-2021-44228_Log4Shell

Demo Exploiting Log4Shell Vulnerability CVE-2021-44228 This project simulates an RCE attack scenario through the Log4Shell vulnerability in the Apache Log4j 2 library. Components 1. vulnerable-app : Spring Boot application using Log4j 2.14.1. 2. attacker : Contains malicious LDAP server marshalse...

CVE-2021-44228-Apache-Log4j-Rce-main

CVE-2021-44228Apache Log4j Remote Code Execution） all log4j-core versions =2.0-beta9 and =2.14.1 The version of 1.x have other vulnerabilities, we recommend that you update the latest version. Security Advisories / Bulletins linked to Log4Shell CVE-2021-44228 Usage: download this project, compile...

cve-2021-44228

CVE-2021-44228 This repository represents a simplified simulation of infamous CVE-2021-44228 issue. Aside from system properties and other dictionary structures lookups, Apache Log4j also implements JNDI lookup feature for various reasons. The JNDI can obtain services from a number of service...

CVE-2021-45046

tejas-nagchandi/CVE-2021-45046 Attack Description It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map MDC input data when the logging configuration uses a...

Log4Shell-vulnerability-CVE-2021-44228-

Log4Shell Threat Detection CVE-2021-44228 Overview This repository provides an in-depth analysis and implementation of a Machine Learning-based Log4Shell CVE-2021-44228 Threat Detection System. It includes: Understanding Log4Shell : What it is and why it is dangerous Dataset Collection : Sources...

CVE-2021-44228-PoC

Entorno de laboratorio autónomo PoC que ejecuta una reverse-shell con Log4Shell CVE-2021-44228 Este es un entorno de laboratorio autónomo que ejecuta el exploit de forma segura, todo desde docker compose. Las versiones afectadas son Apache Log4j =2.0–2.14.1 y el CVE se rastrea como CVE-2021-44228...

Apache Log4j API: Improper serialization of non-finite floating-point values in MapMessage.asJson()

Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. This issue affects Apache Log4j API versions 2.13.1 through 2.25.4 and version 2.26.0. The fix for CVE-2026-34481 did not cover all code paths: wh...

CLEANSTART-2026-YP50898 Apache Log4j Core's XmlLayout https://logging

Multiple security vulnerabilities affect the wso2is package. Apache Log4j Core's XmlLayout https://logging. See references for individual vulnerability details...

Security Bulletin: Vulnerability in Apache Log4j API affects DB2 Dev Extension (CVE-2026-49844)

Summary Upgraded log4j-api to 2.25.5 to remediate CVE-2026-49844 CWE-116: Improper Encoding of non-finite floating-point values in MapMessage JSON serialization — CVSS Base Score 6.3 Medium — PVR0815934. Vulnerability Details CVEID:CVE-2026-49844 DESCRIPTION: Improper encoding of non-finite...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Invalid XML output causes denial of service in logging

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

org.apache.logging.log4j: Apache Log4j JsonTemplateLayout: Denial of Service via invalid JSON output

A flaw was found in Apache Log4j's JsonTemplateLayout. This vulnerability allows a remote attacker to disrupt log processing systems. By sending log events that include specific non-numeric floating-point values, the attacker can cause the JsonTemplateLayout to generate invalid JSON output. This...

org.apache.logging.log4j: Apache Log4j JsonTemplateLayout: Denial of Service via invalid JSON output

A flaw was found in Apache Log4j's JsonTemplateLayout. This vulnerability allows a remote attacker to disrupt log processing systems. By sending log events that include specific non-numeric floating-point values, the attacker can cause the JsonTemplateLayout to generate invalid JSON output. This...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Invalid XML output causes denial of service in logging

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Log injection via CRLF sequences due to configuration attribute renames

A flaw was found in Apache Log4j Core. This vulnerability allows for log injection through the use of Carriage Return Line Feed CRLF sequences. This occurs because security-related configuration attributes were silently renamed, impacting users who directly configure Rfc5424Layout with stream-bas...

CLEANSTART-2026-JY79008 Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON

Multiple security vulnerabilities affect the apache-hive package. Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. See references for individual vulnerability details...

Security Bulletin: IBM App Connect Enterprise and IBM Integration Bus for z/OS are vulnerable to Improper Encoding or Escaping of Output due to Apache Log4j (CVE-2026-49844)

Summary IBM App Connect Enterprise and IBM Integration Bus for z/OS are vulnerable to Improper Encoding or Escaping of Output due to Apache Log4j. Vulnerability Details CVEID:CVE-2026-49844 DESCRIPTION: Improper encoding of non-finite floating-point values during MapMessage JSON serialization in...

CLSA-2026-1788442788 TuxCare security update for org.apache.logging.log4j (2 CVEs)

TuxCare rebuilt 32 org.apache.logging.log4j packages to address 2 CVEs. Fixed in 2.17.1-tuxcare.4...

Security Bulletin: IBM Operational Decision Manager for Aug 2026 - Multiple CVEs addressed

Summary In addition to many updates of operating system level packages, the following security vulnerabilities are addressed with IBM Operational Decision Manager Vulnerability Details CVEID:CVE-2026-54515 DESCRIPTION: jackson-databind contains the general-purpose data-binding functionality and...