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Critical

Remote code injection in Log4j (through pax-logging-log4j2)

  • Disclosed: 10.12.2021
  • Updated: 11.10.2026 12:21

Impact

Remote Code Execution.

Patches

Users of pax-logging 1.11.9 should update to 1.11.10. Users of pax-logging 2.0.10 should update to 2.0.11.

Workarounds

Set system property -Dlog4j2.formatMsgNoLookups=true

References

https://github.com/advisories/GHSA-jfh8-c2jp-5v3q

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.ops4j.pax.logging:pax-logging-log4j2 >= 2.0.0, < 2.0.11, < 1.11.10 2.0.11, 1.11.10

References

CVSS score -
Weakness (CWE)
-
Platform
Java / Kotlin (Maven)
Package
org.ops4j.pax.logging:pax-logging-log4j2
Disclosed
10.12.2021
Updated
11.10.2026 12:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-xxfh-x98p-j8fr - CC BY 4.0

Vulnerability history: org.ops4j.pax.logging:pax-logging-log4j2

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
5
First → latest
12.2021 01.2022
Without a fix
0
Exploited in attacks
2

Severity breakdown

  • Critical 3
  • High 1
  • Medium 1

Disclosures per year

  1. Improper Input Validation and Injection in Apache Log4j2
    Medium · 6.6 CVE-2021-44832 >= 1.8.0, < 1.9.2, >= 1.10.0, < 1.10.9, >= 1.11.0, < 1.11.13, >= 2.0.0, < 2.0.14 1.9.2, 1.10.9, 1.11.13, 2.0.14
  2. Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion
    High · 8.6 CVE-2021-45105 >= 1.8.0, < 1.9.2, >= 1.10.0, < 1.10.9, >= 1.11.0, < 1.11.12, >= 2.0.0, < 2.0.13 1.9.2, 1.10.9, 1.11.12, 2.0.13
  3. Incomplete fix for Apache Log4j vulnerability
    Critical · 9.0 Exploited in attacks CVE-2021-45046 >= 1.8.0, < 1.9.2, >= 1.10.0, < 1.10.8, >= 1.11.0, < 1.11.11, >= 2.0.0, < 2.0.12 1.9.2, 1.10.8, 1.11.11, 2.0.12
  4. Remote code injection in Log4j (through pax-logging-log4j2) this entry
    Critical ghsa-xxfh-x98p-j8fr >= 2.0.0, < 2.0.11, < 1.11.10 2.0.11, 1.11.10
  5. Remote code injection in Log4j
    Critical · 10.0 Exploited in attacks CVE-2021-44228 >= 1.8.0, < 1.9.2, >= 1.10.0, < 1.10.8, >= 1.11.0, < 1.11.10, >= 2.0.0, < 2.0.11 1.9.2, 1.10.8, 1.11.10, 2.0.11

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