GHSA-p6xc-xr62-6r2g
HIGHApache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
org.apache.logging.log4j:log4j-core☕org.apache.logging.log4j:log4j-core☕org.apache.logging.log4j:log4j-core☕org.ops4j.pax.logging:pax-logging-log4j2☕org.ops4j.pax.logging:pax-logging-log4j2☕org.ops4j.pax.logging:pax-logging-log4j2☕org.ops4j.pax.logging:pax-logging-log4j2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0 and 2.12.3.
Affected packages
Only the org.apache.logging.log4j:log4j-core package is directly affected by this vulnerability. The org.apache.logging.log4j:log4j-api should be kept at the same version as the org.apache.logging.log4j:log4j-core package to ensure compatability if in use.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.logging.log4j:log4j-core | ≥ 2.4.0&&< 2.12.3 | 2.12.3 |
| ☕Maven | org.apache.logging.log4j:log4j-core | ≥ 2.13.0&&< 2.17.0 | 2.17.0 |
| ☕Maven | org.apache.logging.log4j:log4j-core | all versions | 2.3.1 |
| ☕Maven | org.ops4j.pax.logging:pax-logging-log4j2 | ≥ 1.8.0&&< 1.9.2 | 1.9.2 |
| ☕Maven | org.ops4j.pax.logging:pax-logging-log4j2 | ≥ 1.10.0&&< 1.10.9 | 1.10.9 |
| ☕Maven | org.ops4j.pax.logging:pax-logging-log4j2 | ≥ 1.11.0&&< 1.11.12 | 1.11.12 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Frequently Asked Questions
Is GHSA-p6xc-xr62-6r2g in your stack?
O3 detects GHSA-p6xc-xr62-6r2g across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.