CVE-2026-108546
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk56th percentile - higher than 56% of all known CVEs
Summary
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.
Risk Assessment
The risk is high because an attacker can execute arbitrary commands on the server in the context of the PHP process, potentially leading to full system compromise and data breach.
Recommendation
Immediately update Spotweb to a patched version and avoid using unsafe exec() functions with unprocessed input. Additionally, restrict the ability to publish spots to trusted users only.
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No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS