org.apache.logging.log4j:log4j-core Known Vulnerabilities & Fixes
org.apache.logging.log4j:log4j-core has 5 known security vulnerabilities in Maven (Java). Upgrade to version 2.25.3 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Actively Exploited
CISA has confirmed this package has vulnerabilities under active exploitation. Prioritize updating immediately.
Recommended safe version: 2.25.3
Upgrading to 2.25.3 or later resolves all 5 known vulnerabilities in org.apache.logging.log4j:log4j-core. Update your pom.xml or build.gradle to version 2.25.3.
Is org.apache.logging.log4j:log4j-core in your project?
Check if you're affected and upgrade to 2.25.3 to stay secure.
Active Exploitation Warning
One or more vulnerabilities in this package are known to be actively exploited in the wild. Immediate action is recommended.
Security Summary
- 13 affected version ranges have been identified across these 5 advisories.
- 100% of known issues have a published fixed version.
- Highest exploit-probability (EPSS) score for org.apache.logging.log4j:log4j-core: 94.4%.
- Remediation: Update the org.apache.logging.log4j:log4j-core version in your pom.xml or build.gradle
Vulnerabilities
5 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed Dec 10, 2021, most recently Dec 18, 2025 (1470 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| CVE-2021-44228 Remote code injection in Log4j | CRITICAL | 2.13.0, 2.13.1, 2.13.2, 2.13.3 (+29 more) | 2.15.0, 2.3.1, 2.12.2 |
| CVE-2021-45046 Incomplete fix for Apache Log4j vulnerability | CRITICAL | 2.13.0, 2.13.1, 2.13.2, 2.13.3 (+40 more) | 2.16.0, 2.12.2, 2.3.1 |
| CVE-2021-45105 Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion | HIGH | 2.10.0, 2.11.0, 2.11.1, 2.11.2 (+42 more) | 2.12.3, 2.17.0, 2.3.1 |
| CVE-2021-44832 Improper Input Validation and Injection in Apache Log4j2 | MEDIUM | 2.0, 2.0-beta7, 2.0-beta8, 2.0-beta9 (+37 more) | 2.3.2, 2.12.4, 2.17.1 |
| CVE-2025-68161 Apache Log4j does not verify the TLS hostname in its Socket Appender | MEDIUM | 2.0, 2.0-beta9, 2.0-rc1, 2.0-rc2 (+55 more) | 2.25.3 |
About This Data
Vulnerability data for org.apache.logging.log4j:log4j-core is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related Maven (Java) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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