CVE-2026-4592
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 · uneditedA security vulnerability has been detected in kalcaddle kodbox 1.64. This impacts the function loginAfter/tfaVerify of the file /workspace/source-code/plugins/client/controller/tfa/index.class.php of the component Password Login. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is said to be difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceVulnerability in kalcaddle kodbox 1.64's TFA (Two-Factor Authentication) component allows improper authentication via the loginAfter/tfaVerify function in the Password Login feature. The flaw in /workspace/source-code/plugins/client/controller/tfa/index.class.php enables authentication bypass with high complexity, publicly disclosed.
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
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 kodbox installationLocate kodbox installation directory and identify the version. Common paths include /var/www/html/kodbox or /opt/kodbox. Check for version.php or similar version file in the installation root.Affected if kodbox version 1.64 is installed
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Verify TFA plugin is enabledAccess kodbox admin panel, navigate to system settings or user authentication settings. Check if the Two-Factor Authentication (TFA) plugin is enabled in the plugin management section.Affected if TFA plugin is enabled and active in kodbox 1.64
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Check password login with TFA is configuredExamine the authentication configuration to determine if Password Login with TFA verification is configured. This typically appears in user security settings or authentication methods configuration.Affected if Password Login feature with TFA verification is configured for any user account
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Inspect vulnerable tfaVerify functionLocate the file /workspace/source-code/plugins/client/controller/tfa/index.class.php (or equivalent path in your installation) and examine the tfaVerify or loginAfter function for improper token validation logic.Affected if The tfaVerify function exists and shows inadequate token validation during authentication
A user is affected if running kodbox version 1.64 with TFA enabled and password login with TFA verification configured, where the tfaVerify function in the TFA plugin contains improper authentication validation.
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 dataSince vendor did not respond, implement code review and fix the tfaVerify function to properly validate authentication tokens; consider disabling TFA or implementing additional authentication controls until a patch is available.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-4592 — 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-2026-4592 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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- Version or environment caveats, and links to real fixes
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