CVE-2026-108546
Spotweb through 1.5.8 OS Command Injection via Spot Title in Runcommand Integration
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | spotweb |
| Product | spotweb |
| Published | Oct 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
spotweb / spotweb
0 ≤ 1.5.8
References
hackmd.io: https://hackmd.io/@haind/spotweb-runcommand-title-injection github.com: https://github.com/spotweb/spotweb github.com: https://github.com/spotweb/spotweb/blob/1.5.8/lib/services/NzbHandler/Services_NzbHandler_Runcommand.php#L41-L45 vulncheck.com: https://www.vulncheck.com/advisories/spotweb-through-1.5.8-os-command-injection-via-spot-title-in-runcommand-integration
Credits
HaiND from the Post and Telecommunication Institute of Technology