CVE-2026-104721

A path-traversal vulnerability exists in the logback-classic module for Java (versions 0.9.14 through 1.6.4 ). The flaw is caused by an unsanitized Mapped Diagnostic Context (MDC) discriminator value flowing into a nested FileAppender path. An attacker capable of influencing this MDC value—for ex...

CVE-2026-104721 Logback: Incomplete protection against CVE-2026-19880

Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java logback-classic module allows path-traversal vulnerability. More specifically, an MDC-based discriminator value flows unsanitized into a nested FileAppender path, letting an attacker who influences that MDC value e.g. via an HTTP...

PT-2026-104330

Name of the Vulnerable Software and Affected Versions Logback-classic versions 0.9.14 through 1.6.4 Description A path-traversal issue exists in the logback-classic module. An MDC-based discriminator value is passed unsanitized into a nested FileAppender path. An attacker who can influence this M...

OESA-2026-4014 logback security update

Logback is intended as a successor to the popular log4j project. Security Fixes: Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java logback-classic module allows path-traversal vulnerability. More specifically, an MDC-based discriminator value flows unsanitized into a nested...

CVE-2026-19880: Improper Limitation of a Pathname to a Restricted Directory

Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java logback-classic module allows path-traversal vulnerability. More specifically, an MDC-based discriminator value flows unsanitized into a nested FileAppender path, letting an attacker who influences that MDC value e.g. via an HTTP...