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CVE-2026-108546— Spotweb through 1.5.8 OS Command Injection via Spot Title in Runcommand Integration

Quick assessment

Affected
spotweb spotweb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Spotweb 版本 1.5.8 及之前版本中，存在一个位于 NZB 处理程序中的操作系统命令注入漏洞。远程攻击者可通过发布带有恶意标题的“spots”（新闻组消息）来执行任意系统命令。攻击者能够在 Usenet 上发布带有 shell 元字符的恶意标题的“spots”，这些元字符在后续操作中被未经转义地替换到 变量中，并在用户下载该 spot 时传入 函数执行，从而以 Spotweb PHP 进程的权限运行恶意命令。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
spotweb spotweb ≤ 1.5.8 affected
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I. Basic Information for CVE-2026-108546

Vulnerability Information
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Vulnerability Title
Spotweb through 1.5.8 OS Command Injection via Spot Title in Runcommand Integration
Source: CVE Program / CVE List V5
Vulnerability Description
Spotweb through 1.5.8 contains an OS command injection vulnerability in the runcommand NZB handler that allows remote attackers to execute commands by publishing spots with malicious titles. Attackers can post self-signed spots over Usenet with shell metacharacters in the title, which are substituted unescaped for $SPOTTITLE and passed to exec() when a user downloads the spot, running commands as the Spotweb PHP process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
spotweb spotweb 0 ~ 1.5.8 -

II. Public POCs for CVE-2026-108546

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-108546

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Patches & Fixes for CVE-2026-108546 (1)

Proof of Concept for CVE-2026-108546 (1)

News Coverage for CVE-2026-108546 (1)

Other References for CVE-2026-108546 (1)

IV. Related Vulnerabilities

Same weakness: CWE-78

V. Comments for CVE-2026-108546

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