Source: logback Version: 1:1.6.3-2 X-Debbugs-CC: [email protected] Severity: important Tags: security upstream
Hi, The following vulnerability was published for logback. CVE-2026-104721[0]: | 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 header) create and append log | files outside the intended directory. This issue affects Logback- | classic: from 0.9.14 through 1.6.4. This vulnerability is similar | to CVE-2026-19880 but involves other attack techniques. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-104721 https://www.cve.org/CVERecord?id=CVE-2026-104721 [1] https://logback.qos.ch/news.html#1.6.5 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
