CVE-2026-21719
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 · uneditedAn OS command injection vulnerability exists in CubeCart prior to 6.6.0, which may allow a user with an administrative privilege to execute an arbitrary OS command.
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 confidenceAn OS command injection vulnerability exists in CubeCart e-commerce platform versions prior to 6.6.0. The flaw allows authenticated users with administrative privileges to execute arbitrary operating system commands on the underlying server through unsanitized input in admin functionality.
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< 6.6.0CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:H/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 the installed CubeCart versionLocate the version file or check the admin dashboard for the current software version. Common locations include a version.php file in the root or admin directory, or the admin panel's 'About' or 'System Information' section.Affected if The detected version is lower than 6.6.0 (e.g., 6.5.x, 6.4.x, or earlier releases).
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Confirm administrative access is enabledVerify that the /admin directory or administrative interface is accessible on the web server. Attempt to access the admin login page via the standard admin route.Affected if The administrative interface is publicly accessible without IP restrictions or additional authentication controls.
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Check for existing admin user accountsReview the database or admin panel for configured administrative user accounts. Identify whether any admin-level accounts exist in the system.Affected if One or more administrative user accounts are present and active in the CubeCart installation.
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Inspect admin functionality for unsanitized input handlingIf you have admin access, review the admin panel's input fields (particularly in areas that may interact with system calls). Look for parameters that accept user input and could be passed to shell commands without proper sanitization.Affected if The admin panel contains input fields that accept arbitrary user input and lack input validation or sanitization mechanisms.
You are affected if the installed CubeCart version is below 6.6.0 and the administrative interface is accessible with active admin accounts, as the command injection flaw can be exploited through unsanitized input in admin functionality.
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 · scoped6.6.0
Upgrade CubeCart to version 6.6.0 or later to remediate this vulnerability. Additionally, restrict administrative access to trusted personnel only and implement least-privilege principles for admin accounts.
6.6.0
- Download CubeCart version 6.6.0 from the official CubeCart website or repository
- Back up your current CubeCart installation and database before upgrading
- Upload and install the version 6.6.0 files to replace the existing installation
- Verify the upgrade was successful by logging into the admin panel
- Confirm the admin panel is functioning correctly
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21719 — 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-2026-21719 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