CVE-2026-30880
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 · uneditedbaserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
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 confidencebaserCMS versions prior to 5.2.3 contain an OS command injection vulnerability in the installer component. Attackers can inject and execute arbitrary operating system commands through unsanitized input processed by the installer, potentially achieving full system compromise.
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< 5.2.3CVSS 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 installed baserCMS versionLocate the version information in your baserCMS installation - typically found in a version file, configuration file, or within the admin dashboard under system information or about sectionAffected if Installed version is lower than 5.2.3
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Verify installer accessibilityDetermine whether the installer component is still accessible on the server - check if installer scripts or routes remain accessible via web or command line, or if the installation directory exists in the web rootAffected if Installer is accessible and version is below 5.2.3
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Check installation stateReview whether baserCMS has already been fully installed and configured - if the installer has completed, assess whether the installer files were removed or disabledAffected if Installer remains functional or executable and version is below 5.2.3
Environment is affected if baserCMS version is below 5.2.3 and the installer component remains accessible or executable on the system
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 · scoped5.2.3
Upgrade to baserCMS version 5.2.3 or later. If immediate patching is not feasible, disable or restrict network access to the installer functionality and implement web application firewall rules to detect and block command injection attempts.
5.2.3
- 1. Backup your current baserCMS installation and database before proceeding with any upgrade.
- 2. Download baserCMS version 5.2.3 from the official basercms.net website or verified release repository.
- 3. Extract the upgrade package to your server.
- 4. Replace the existing baserCMS files with the new version 5.2.3 files, preserving your configuration files and uploads directory.
- 5. Run any provided migration scripts or database update commands included in the upgrade.
- 6. Verify the installation is functioning correctly and the vulnerability is remediated.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,832.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-30880 — 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-2026-30880 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