VYPR
Medium severity5.9NVD Advisory· Published Dec 18, 2021· Updated May 29, 2026

CVE-2021-45105

CVE-2021-45105

Description

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) 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, 2.12.3, and 2.3.1.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.logging.log4j:log4j-coreMaven
>= 2.4.0, < 2.12.32.12.3
org.apache.logging.log4j:log4j-coreMaven
>= 2.13.0, < 2.17.02.17.0
org.apache.logging.log4j:log4j-coreMaven
< 2.3.12.3.1
org.ops4j.pax.logging:pax-logging-log4j2Maven
>= 1.8.0, < 1.9.21.9.2
org.ops4j.pax.logging:pax-logging-log4j2Maven
>= 1.10.0, < 1.10.91.10.9
org.ops4j.pax.logging:pax-logging-log4j2Maven
>= 1.11.0, < 1.11.121.11.12
org.ops4j.pax.logging:pax-logging-log4j2Maven
>= 2.0.0, < 2.0.132.0.13

Affected products

205

Patches

Vulnerability mechanics

References

21

News mentions

0

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