Is org.apache.logging.log4j:log4j-core safe ? org.apache.logging.log4j:log4j-core (maven) has 12 known vulnerabilities, the worst rated CRITICAL. Upgrade to 2.25.4 or later to clear all of them. No malicious-package signal is recorded.
// reach 0 direct dependencies
none carry a known advisory
0 packages depend on it
dependents not yet indexed for this ecosystem
// ai model usage Tracked for PyPI packages. HuggingFace models declare Python dependencies, so maven packages are not covered.
cvss CVSS v3.1 base score out of 10
epss chance of exploitation in 30 days, 100th percentile of all CVEs
xyz score CyberXYZ composite out of 10
fig. 01 — GHSA-7rjr-3q55-vv33, the advisory selected below
// 12 advisories GHSA-7rjr-3q55-vv33 The fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. KEV CRIT GHSA-jfh8-c2jp-5v3q Log4j versions prior to 2.16.0 are subject to a remote code execution vulnerability via the ldap JNDI parser. KEV CRIT GHSA-fxph-q3j8-mv87 In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially… CRIT GHSA-vp98-w2p3-mv35 UNSUPPORTED WHEN ASSIGNED When using the Chainsaw or SocketAppender components with Log4j 1.x on JRE less than 1.7, an attacker that manages to cause a logging… HIGH GHSA-p6xc-xr62-6r2g Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. HIGH GHSA-h383-gmxw-35v2 The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. MODE GHSA-445c-vh5m-36rj Apache Log4j Core's Rfc5424Layout, in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented renames of… MODE GHSA-6hg6-v5c8-fphq The fix for CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName system property, but not when… MODE GHSA-3pxv-7cmr-fjr4 Apache Log4j Core's XmlLayout, in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification, producing invalid… MODE GHSA-vc5p-v9hr-52mj The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer certificate, even when the… MODE GHSA-8489-44mv-ggj8 Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to an attack where an attacker with… MODE GHSA-vwqq-5vrc-xw9h Improper validation of certificate with host mismatch in Apache Log4j SMTP appender prior to version 2.13.2. LOW The fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations.
Full advisory text at GitHub advisory or NVD .
// cvss v3.1 vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High // questions Is org.apache.logging.log4j:log4j-core safe to install? CyberXYZ does not call a package safe in absolute terms. It records 12 known vulnerabilities for org.apache.logging.log4j:log4j-core (maven), the worst rated CRITICAL, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does org.apache.logging.log4j:log4j-core have known vulnerabilities? Yes. CyberXYZ records 12 known vulnerabilities for org.apache.logging.log4j:log4j-core (maven), the worst rated CRITICAL. These include GHSA-7rjr-3q55-vv33, GHSA-jfh8-c2jp-5v3q, GHSA-fxph-q3j8-mv87, GHSA-vp98-w2p3-mv35, GHSA-p6xc-xr62-6r2g.
Which version of org.apache.logging.log4j:log4j-core should I use? 2.25.4 or later clears every advisory recorded for org.apache.logging.log4j:log4j-core (maven). Check the release you pick before installing it.
How do I check org.apache.logging.log4j:log4j-core before installing? Search org.apache.logging.log4j:log4j-core in CyberXYZ Check at https://cyberxyz.io/check?q=org.apache.logging.log4j%3Alog4j-core . The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 10:30 UTC. The most recent advisory here was published 2026-04-10. Updated continuously from NVD, GHSA, OSV and CNA feeds.
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