Path Traversal in Rsyslog
CVE-2026-92709
Rsyslog is a rocket-fast system for log processing. From versions 1.15.0 to 8.2610.0, rsyslog's omfile dynaFile facility intentionally allows templates to generate flexible output paths. This supports valid deployments that route logs into different directories or use dynamically generated file names. A deployment becomes unsafe when a dynaFile template uses a value influenced by untrusted input as a path component without explicit secure-path handling. In that configuration, the rendered path can escape the operator's intended log directory. This is not limited to the RFC5424 HOSTNAME field. Any untrusted value that reaches a dynaFile path component can create the condition. At time of publication, there are no publicly available patches.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Rsyslog — versions >= 1.15.0, <= 8.2610.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-92709?
- CVE-2026-92709 is a high-severity vulnerability in Rsyslog, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-10-22.
- How severe is CVE-2026-92709?
- High severity. CVSS v3 base score is 8.1 out of 10.