Security Bulletin: due to the use of Apache Log4j, IBM Transformation Extender Advanced is vulnerable to Host Mismatch

Summary Apache Log4j is used by IBM Transformation Extender Advanced also known as IBM Standards Processing Engine as part of common utility helpers. Apache Log4j has been updated to address CVE-2025-68161 which causes hostname mismatch. Vulnerability Details CVEID:CVE-2025-68161 DESCRIPTION: The...

log4j-2.20.0-2.1 on GA media (moderate)

log4j-2.20.0-2.1 on GA media Announcement ID: openSUSE-SU-2026:10544-1 Rating: moderate Cross-References: CVE-2026-34477 CVE-2026-34479 CVE-2026-34480 CVE-2026-34481 CVSS scores: CVE-2026-34477 SUSE : 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N CVE-2026-34479 SUSE : 5.3...

Apache Log4j 2.0-alpha1 < 2.25.4 XmlLayout Invalid XML Output (CVE-2026-34480)

The version of Apache Log4j on the remote host is 2.0-alpha1 through 2.25.3. It is, therefore, affected by a vulnerability: - The XmlLayout fails to sanitize characters forbidden by the XML 1.0 specification, producing invalid XML output whenever a log message or MDC value contains such character...

Apache Log4j 2.21.0 < 2.25.4 Rfc5424Layout Log Injection (CVE-2026-34478)

The version of Apache Log4j on the remote host is 2.21.0 through 2.25.3. It is, therefore, affected by a vulnerability: - The Rfc5424Layout is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes. The newLineEscape attribute was...

The vulnerability of the Log4j1XmlLayout component in the Apache Log4j Core logging library allows attackers to influence the integrity of the protected information.

The vulnerability of the Log4j1XmlLayout component in the Apache Log4j Core logging library is related to improper encoding or escaping of output data. Exploiting this vulnerability allows an attacker to influence the integrity of the protected information...

Apache Log4j 2.12.0 < 2.25.4 SSL Hostname Verification Bypass (CVE-2026-34477)

The version of Apache Log4j on the remote host is 2.12.0 through 2.25.3. It is, therefore, affected by a vulnerability: - The verifyHostName configuration attribute of the Ssl element was silently ignored in all versions through 2.25.3, leaving TLS connections vulnerable to interception via...

SUSE 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...

SUSE CVE-2026-34478

Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.htmlRFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes. Two distinct issues affect user...

SUSE CVE-2026-34479

The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers are required to reject documents containing such characters with a fatal error, which may cause downstream log...

SUSE 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...

SUSE CVE-2026-34481

Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to and including 2.25.3, produces invalid JSON output when log events contain non-finite floating-point values NaN, Infinity, or -Infinity, which are prohibited by RFC 8259. Th...

Improper Certificate Validation

Apache Log4j Core is vulnerable to Improper Certificate Validation. The vulnerability is due to ignored hostname verification settings in TLS configuration, which allows an attacker to perform a man-in-the-middle attack by presenting a trusted certificate and intercepting secure communications...

OPENSUSE-SU-2026:10544-1 log4j-2.20.0-2.1 on GA media

These are all security issues fixed in the log4j-2.20.0-2.1 package on the GA media of openSUSE Tumbleweed...

CVE-2026-34481

A flaw was found in Apache Log4j's JsonTemplateLayout. This vulnerability allows a remote attacker to disrupt log processing systems. By sending log events that include specific non-numeric floating-point values, the attacker can cause the JsonTemplateLayout to generate invalid JSON output. This...

CVE-2026-34479

A flaw was found in the Apache Log4j 1-to-Log4j 2 bridge. The Log4j1XmlLayout component fails to properly escape characters forbidden by the XML 1.0 standard. This improper handling of characters results in malformed XML output, which can cause downstream log processing systems to drop or fail to...

CVE-2026-34477

A flaw was found in Apache Log4j Core. A network-based attacker can perform a man-in-the-middle MITM attack, allowing them to intercept encrypted communications. This occurs when an SMTP, Socket, or Syslog appender uses Transport Layer Security TLS with a nested element, and the attacker has a...

CVE-2026-34480

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

Linux Distros Unpatched Vulnerability : CVE-2026-34478

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.htmlRFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to lo...

Linux Distros Unpatched Vulnerability : CVE-2026-34477

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-34480

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...