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CVE-2026-63404— Faktory: Insecure predictable /tmp/redis.conf enables local Redis config hijack (network exposure / root RCE primitive)

Quick assessment

Affected
contribsys faktory
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Faktory 是一个与编程语言无关的后台任务服务器。在 1.10.0 之前的版本中，其内置的 Redis 引导程序存在不安全的临时文件漏洞，允许本地普通用户劫持 Redis 配置并提升权限至 root。该程序将启动配置写入固定且可预测的全局可写路径 ，仅在文件不存在时创建，并在后续启动过程中不再验证该文件。由于 目录全局可写，本地普通用户可以在 Faktory 启动之前预先创建 ，并植入由攻击者指定的 Redis 配置指令，而 Faktory 会原样使用该被植入的文件。 Faktory 仅覆盖 、 和 三个选项，

CVSS 7.3 · High
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I. Basic Information for CVE-2026-63404

Vulnerability Information
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Vulnerability Title
Faktory: Insecure predictable /tmp/redis.conf enables local Redis config hijack (network exposure / root RCE primitive)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的临时文件
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
contribsys faktory < 1.10.0 -

II. Public POCs for CVE-2026-63404

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8393 chars
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III. Intelligence Information for CVE-2026-63404

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Patches & Fixes for CVE-2026-63404 (1)

Vendor Advisories for CVE-2026-63404 (1)

Vendor Pages for CVE-2026-63404 (1)

IV. Related Vulnerabilities

Same product: faktory
Same vendor: contribsys
Same weakness: CWE-377

V. Comments for CVE-2026-63404

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