Medium [CVE-2026-19880] Path traversal allows arbitrary log file creation
This medium-severity Red Hat Linux advisory covers CVE-2026-19880 affecting Migration Toolkit for Applications 8, OpenShift Serverless, Red Hat Ceph Storage 6.
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Summary
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 occurs because an unsanitized discriminator value, influenced by the attacker (for example, via an HTTP header), is used in a file path within the logging mechanism. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).
Weakness: CWE-22.
Affected Red Hat products: Migration Toolkit for Applications 8; OpenShift Serverless; Red Hat Ceph Storage 6; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat Ceph Storage 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Fuse 7; Red Hat JBoss Web Server 7; Red Hat OpenShift Dev Spaces; Red Hat Satellite 6; Red Hat Single Sign-On 7.
Red Hat lists Red Hat Hardened Images as not affected. Will not fix / out of support: Red Hat Ceph Storage 6; Red Hat Ceph Storage 9; Red Hat Fuse 7; Red Hat Single Sign-On 7.
Red Hat does not currently list a fixing RHSA for this CVE.
- 0.9.14
- 1.6.2
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
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