Spotweb through 1.5.8 contains an OS command injection vulnerability in the runcommand NZB handler that allows remote attackers to execute commands… (CVE-2026-108546)
Description
Spotweb versions through 1.5.8 have an OS command injection vulnerability in the runcommand NZB handler. This flaw allows remote attackers to execute arbitrary commands by publishing spots with malicious titles containing shell metacharacters. When a user downloads such a spot, the malicious title is passed unescaped to the exec() function, running commands with the privileges of the Spotweb PHP process.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Spotweb through version 1.5.8 contains an OS command injection vulnerability (CWE-78) in the runcommand NZB handler. Remote attackers can publish self-signed spots over Usenet with shell metacharacters embedded in the spot title. These titles are substituted unescaped for the $SPOTTITLE variable and passed directly to the exec() function when a user downloads the spot, resulting in arbitrary command execution as the Spotweb PHP process.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary OS commands on the server running Spotweb with the privileges of the PHP process. This can lead to full system compromise, data theft, or disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid downloading spots from untrusted sources and consider restricting execution privileges of the Spotweb PHP process to minimize impact.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3cfw-8vg9-xhxx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-108546"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6acaad822cdf04f6565142b5
Added to database: 10/10/2026, 21:26:26 UTC
Last enriched: 10/10/2026, 21:29:21 UTC
Last updated: 10/10/2026, 22:48:22 UTC
Views: 2
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