---
id: CVE-2026-92709
title: 'Rsyslog: DynFile Path Traversal → Arbitrary File Write as Root → RCE'
summary: >-
  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 in…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-22
  - CWE-73
vendor: rsyslog
product: rsyslog
affected:
  - 'rsyslog >= 1.15.0, <= 8.2610.0'
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T13:32:56.695Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-92709'
references:
  - url: 'https://github.com/rsyslog/rsyslog/security/advisories/GHSA-xmp9-244p-5ggv'
    label: 'https://github.com/rsyslog/rsyslog/security/advisories/GHSA-xmp9-244p-5ggv'
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.264Z'
---

## Overview

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.

## Affected

- `rsyslog >= 1.15.0, <= 8.2610.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.