CVE-2020-37027
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSickbeard alpha contains a remote command injection vulnerability that allows unauthenticated attackers to execute arbitrary commands through the extra scripts configuration. Attackers can set malicious commands in the extra scripts field and trigger processing to execute remote code on the vulnerable Sickbeard installation.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceSickbeard alpha contains a remote command injection vulnerability that allows unauthenticated attackers to execute arbitrary OS commands by injecting malicious payloads into the extra scripts configuration field. When the application processes these scripts, the injected commands are executed on the host system with the privileges of the Sickbeard process.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Sickbeard installationLocate the Sickbeard application on the system (common locations include /opt/sickbeard, /home/user/sickbeard, or within a media server stack)Affected if Sickbeard alpha is installed on the system
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Check installed versionExamine the version file or application metadata to determine if it is an alpha release (no specific version numbers provided in advisory)Affected if The installed version is Sickbeard alpha prior to patches
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Verify extra scripts configurationInspect the Sickbeard configuration file (commonly config.ini or sickbeard.ini in the application data directory) for the 'extra_scripts' parameter and any associated script pathsAffected if The extra_scripts parameter is defined and points to custom script files
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Inspect active extra scriptsReview any scripts referenced in the extra_scripts configuration for suspicious or unexpected command injectionsAffected if Extra scripts contain unsanitized user-controlled input or unexpected shell commands
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Check network exposureDetermine if Sickbeard web interface is accessible from unauthenticated network sources (review firewall rules, reverse proxy configurations, or service binding)Affected if The Sickbeard web interface is exposed to untrusted networks without authentication requirements
A user is affected if they are running Sickbeard alpha with the extra scripts feature enabled and configured, particularly if the web interface is network-accessible to unauthenticated users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImmediately restrict network access to Sickbeard installations, disable the extra scripts functionality if not needed, and migrate to a maintained fork like SickChill which has security patches. If continued use is required, implement strict input validation on the extra scripts parameter.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-37027 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-37027 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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