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...

CVE-2026-34477

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...

UBUNTU-CVE-2026-34477

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...

CVE-2026-34477

CVE-2025-68161 (and CVE-2026-34477) affect Apache Log4j Core Socket Appender where TLS hostname verification was silently ignored when configured via verifyHostName, leaving potential MITM scenarios under SMTP, Socket, or Syslog Appenders using a nested element. The issue spans versions 2.0-beta...

Apache Log4j 安全漏洞

Apache Log4j is an open-source logging tool based on Java, developed by the Apache Foundation in the United States. Versions of Apache Log4j Core 2.25.3 and earlier contain security vulnerabilities. These vulnerabilities stem from the silent ignoring of the verifyHostName configuration property,...

Improper Certificate Validation

com.squareup.okhttp3, okhttp is vulnerable to improper certificate validation. The vulnerability is due to improper use of cryptographic hostname verification in verifyHostName, which allows an attacker to present a certificate for an incorrect domain and potentially perform remote information...

okhttp: information disclosure via improperly used cryptographic function

In verifyHostName of OkHostnameVerifier.java, there is a possible way to accept a certificate for the wrong domain due to improperly used crypto. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Produc...