Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
8.4

Faktory lets local user gain root via /tmp/redis.conf

CVE-2026-63404 · published 2 months ago
Summary

Faktory versions before 1.10.0 create a Redis configuration file in the world‑writable /tmp folder with a predictable name. A non‑privileged user on the same machine can place a malicious file there, causing Redis to run with settings that expose data and allow code execution, ultimately giving the attacker full system access. Upgrade to Faktory 1.10.0 or later to stop this behavior.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
contribsys faktory < 1.10.0
Original advisory text
Faktory: Insecure predictable /tmp/redis.conf enables local Redis config hijack (network exposure / root RCE primitive)
Faktory is a language-agnostic background job server. In versions prior to 1.10.0, the embedded Redis bootstrapper is vulnerable to an insecure temporary file flaw that lets a local unprivileged user hijack the Redis configuration and escalate to root. It writes its startup configuration to a fixed, predictable, world-writable path, /tmp/redis.conf, only creating the file if it does not already exist and never validating it on later boots. Because /tmp is world-writable, a local unprivileged user can pre-create /tmp/redis.conf with attacker-chosen Redis directives before Faktory starts, and Faktory will use the planted file verbatim. Faktory only overrides the unixsocket, dir, and logfile options, leaving directives such as bind, protected-mode, requirepass, and loadmodule attacker-controlled. This lets an attacker silently expose the entire job queue over an unauthenticated network port with no visible error to the administrator. Because the official systemd unit runs Faktory, and the redis-server child it spawns, as root, an attacker can also supply a loadmodule directive to execute arbitrary native code in the root-owned Redis process, escalating from a local unprivileged user to root. This issue is fixed in version 1.10.0.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
8.4 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-377Insecure Temporary File
Timeline
Published25 Aug 2026
Updated26 Oct 2026
First seen25 Aug 2026
Sources
CVE-2026-63404 · NVD
CVE-2026-63404 · MITRE
CVE-2026-63404 · OSV
GHSA-j2vx-rpwf-w77v · GHSA
Track software like this
Free during beta