africa.shuwari.sbt:sbt-js_2.12_1.0 (>=0.14.1 <=0.16.1), africa.shuwari.sbt:sbt-netbeans_2.12_1.0 (>=0.1.0 <=0.1.1) +21863 more potentially affected by CVE-2026-34480 via org.apache.logging.log4j:log4j-core (>=2.0-alpha1 <=2.25.3)

org.apache.logging.log4j:log4j-core MAVEN version =2.0-alpha1, =0.14.1, =0.1.0, =0.9.6, =0.12.0, =0.9.6, =0.9.6, =0.9.6, =0.9.6, =0.14.1, =0.9.6, =0.14.1, =4.4.0.0, =1.4.6, =1.4.6, =1.4.8 and more Source cves: CVE-2026-34480 Source advisory: OSV:GHSA-3PXV-7CMR-FJR4...

GHSA-3PXV-7CMR-FJR4 Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters

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 XML output whenever a log message or MDC value contains such characters. The impact depends on the StAX implementation in use: JRE built-in...

EUVD-2026-21407

The fix for CVE-2025-68161 https://logging.apache.org/security.htmlCVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName https://logging.apache.org/log4j/2.x/manual/systemproperties.htmllog4j2.sslVerifyHostName system property, but no...

EUVD-2026-21410

Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.htmlXmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification https://www.w3.org/TR/xml/charsets producing invalid XML output whenever a log message or M...

Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters

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 XML output whenever a log message or MDC value contains such characters. The impact depends on the StAX implementation in use: JRE built-in...

Apache Log4j Core: `verifyHostName` attribute silently ignored in TLS configuration

The fix for CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName system property, but not when configured through the verifyHostName attribute of the element. Although the verifyHostName configuration attribute was introduced in Log4...

GHSA-6HG6-V5C8-FPHQ Apache Log4j Core: `verifyHostName` attribute silently ignored in TLS configuration

The fix for CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName system property, but not when configured through the verifyHostName attribute of the element. Although the verifyHostName configuration attribute was introduced in Log4...

bg.codexio.ai:openai-api-examples (>=0.8.0.BETA <=0.9.0.BETA-JDK17), ch.cern:cerndb-sw-zkpolicy (=1.0.1-21) +307 more potentially affected by CVE-2026-34479 via org.apache.logging.log4j:log4j-core (>=3.0.0-alpha1 <=3.0.0-beta3)

org.apache.logging.log4j:log4j-core MAVEN version =3.0.0-alpha1, =0.8.0.BETA, =1.0.0, =0.0.2, =00.00.03, =1.0.6, =1.0.7, =1.0.0, =2.0.21, =1.0, =1.0.2 and more Source cves: CVE-2026-34479 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967804...

africa.shuwari.sbt:sbt-js_2.12_1.0 (>=0.14.1 <=0.16.1), africa.shuwari.sbt:sbt-netbeans_2.12_1.0 (>=0.1.0 <=0.1.1) +19258 more potentially affected by CVE-2026-34477 via org.apache.logging.log4j:log4j-core (>=2.12.0 <=2.25.3)

org.apache.logging.log4j:log4j-core MAVEN version =2.12.0, =0.14.1, =0.1.0, =0.9.6, =0.12.0, =0.9.6, =0.9.6, =0.9.6, =0.9.6, =0.14.1, =0.9.6, =0.14.1, =4.4.0.1, =1.4.6, =1.4.6, =1.4.8 and more Source cves: CVE-2026-34477 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967727...

Improper Validation of Certificate with Host Mismatch

Overview org.apache.logging.log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch due to the lack of TLS hostname verification in the SocketAppender component when configured through the...

bg.codexio.ai:openai-api-examples (>=0.8.0.BETA <=0.9.0.BETA-JDK17), ch.cern:cerndb-sw-zkpolicy (=1.0.1-21) +307 more potentially affected by CVE-2026-34477 via org.apache.logging.log4j:log4j-core (>=3.0.0-alpha1 <=3.0.0-beta3)

org.apache.logging.log4j:log4j-core MAVEN version =3.0.0-alpha1, =0.8.0.BETA, =1.0.0, =0.0.2, =00.00.03, =1.0.6, =1.0.7, =1.0.0, =2.0.21, =1.0, =1.0.2 and more Source cves: CVE-2026-34477 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967727...

ai.catboost:catboost-spark_4.0_2.13 (=1.2.10), ai.catboost:catboost-spark_4.1_2.13 (=1.2.10) +922 more potentially affected by CVE-2026-34481 via org.apache.logging.log4j:log4j-layout-template-json (>=2.14.0 <=2.25.3)

org.apache.logging.log4j:log4j-layout-template-json MAVEN version =2.14.0, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =9.0.0, =9.0.0, =9.0.0, =9.0.0, =9.7.1 and more Source cves: CVE-2026-34481 Source...

org.apache.logging.log4j:log4j-layout-template-json-test (>=3.0.0-alpha1 <=3.0.0-beta2), software.airborne.kairo:kairo-alternative-money-formatters (=5.0.0) +29 more potentially affected by CVE-2026-34481 via org.apache.logging.log4j:log4j-layout-template-json (>=3.0.0-alpha1 <=3.0.0-beta3)

org.apache.logging.log4j:log4j-layout-template-json MAVEN version =3.0.0-alpha1, =3.0.0-alpha1, =3.0.0-beta2 - software.airborne.kairo:kairo-alternative-money-formatters =5.0.0 - software.airborne.kairo:kairo-clock-feature =5.0.0 - software.airborne.kairo:kairo-closeable =5.0.0 -...

ai.catboost:catboost-spark_4.0_2.13 (=1.2.10), ai.catboost:catboost-spark_4.1_2.13 (=1.2.10) +7315 more potentially affected by CVE-2026-34478 via org.apache.logging.log4j:log4j-core (>=2.21.0 <=2.25.3)

org.apache.logging.log4j:log4j-core MAVEN version =2.21.0, =0.27.0, =0.26.0, =3.10.0.5, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =2.6.0-looktech.1, =3.0.0, =2.12.1, =2.12.3 and more Source cves: CVE-2026-34478 Source advisor...

ch.cern:cerndb-sw-zkpolicy (=1.0.1-21), cloud.metaapi.sdk:metaapi-common-java (>=1.0.0 <=1.0.1) +258 more potentially affected by CVE-2026-34478 via org.apache.logging.log4j:log4j-core (>=3.0.0-beta1 <=3.0.0-beta3)

org.apache.logging.log4j:log4j-core MAVEN version =3.0.0-beta1, =1.0.0, =0.0.2, =00.00.03, =1.0.6, =1.0.7, =1.0.0, =2.0.21, =1.0, =1.0.2 - com.frostphyr:customappender =1.1.0 and more Source cves: CVE-2026-34478 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967739...

Improper Output Neutralization for Logs

Overview org.apache.logging.log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Improper Output Neutralization for Logs in the Rfc5424Layout plugin due to newLineEscape and useTlsMessageFormat configuration attributes being silently renamed, leading...

africa.shuwari.sbt:sbt-js_2.12_1.0 (>=0.14.1 <=0.16.1), africa.shuwari.sbt:sbt-netbeans_2.12_1.0 (>=0.1.0 <=0.1.1) +21863 more potentially affected by CVE-2026-34480 via org.apache.logging.log4j:log4j-core (>=2.0-alpha1 <=2.25.3)

org.apache.logging.log4j:log4j-core MAVEN version =2.0-alpha1, =0.14.1, =0.1.0, =0.9.6, =0.12.0, =0.9.6, =0.9.6, =0.9.6, =0.9.6, =0.14.1, =0.9.6, =0.14.1, =4.4.0.0, =1.4.6, =1.4.6, =1.4.8 and more Source cves: CVE-2026-34480 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967769...

Improper Encoding or Escaping of Output

Overview org.apache.logging.log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the XmlLayout plugin. An attacker can cause log events to be silently lost or malformed by injecting XML 1.0 forbidden...

bg.codexio.ai:openai-api-examples (>=0.8.0.BETA <=0.9.0.BETA-JDK17), ch.cern:cerndb-sw-zkpolicy (=1.0.1-21) +307 more potentially affected by CVE-2026-34480 via org.apache.logging.log4j:log4j-core (>=3.0.0-alpha1 <=3.0.0-beta3)

org.apache.logging.log4j:log4j-core MAVEN version =3.0.0-alpha1, =0.8.0.BETA, =1.0.0, =0.0.2, =00.00.03, =1.0.6, =1.0.7, =1.0.0, =2.0.21, =1.0, =1.0.2 and more Source cves: CVE-2026-34480 Source advisory: SNYK:JAVA-ORGAPACHELOGGINGLOG4J-15967769...

DEBIAN-CVE-2026-34480

Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.htmlXmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification https://www.w3.org/TR/xml/charsets producing invalid XML output whenever a log message or M...