CVE-2020-26108
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 · uneditedcPanel before 88.0.13 mishandles file-extension dispatching, leading to code execution (SEC-488).
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 · moderate confidencecPanel before version 88.0.13 contains a vulnerability in its file-extension dispatching mechanism that allows remote attackers to execute arbitrary code by exploiting how the software handles certain file extensions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 88.0.13CVSS 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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Identify if cPanel is installedCheck for cPanel installation by looking for /usr/local/cpanel directory or running 'ls -la /usr/local/cpanel' to verify cPanel files exist on the systemAffected if If cPanel is not found in standard installation directories, this CVE does not apply to your environment
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Determine the installed cPanel versionRun '/usr/local/cpanel/cpanel -V' or check /usr/local/cpanel/version file to retrieve the exact installed version numberAffected if If cPanel is installed, note the version number for the next check
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Compare version to affected thresholdCompare the installed version to 88.0.13 - any version lower than 88.0.13 falls within the affected rangeAffected if If the installed version is less than 88.0.13 (for example 88.0.12, 88.0.8, 82.x.x or earlier), the environment is potentially affected by this vulnerability
Your environment is affected if cPanel is present and the installed version is below 88.0.13, since the file-extension dispatching mechanism vulnerability exists in those earlier versions.
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.
dbcve · scoped88.0.13
Upgrade cPanel to version 88.0.13 or later to apply the vendor patch for SEC-488.
cPanel 88.0.13 or later (recommend latest stable release)
- Ensure you have a complete backup of your cPanel configuration and data before proceeding with any upgrade.
- Log in to your server via SSH as root.
- Run the cPanel update script to update to the latest stable release: /scripts/upcp --force
- Alternatively, you can run: /usr/local/cpanel/scripts/upcp
- After the update completes, verify the cPanel version is 88.0.13 or higher by checking: whmapi1 version
- Restart any affected services if prompted after the update.
- Test that normal cPanel functionality works correctly after the upgrade.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-26108 — 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-2020-26108 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data