CVE-2026-42380
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 · uneditedUnauthenticated PHP Object Injection in AI Lab < 5.4.2 versions.
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 confidenceThis is an unauthenticated PHP Object Injection vulnerability in AI Lab versions prior to 5.4.2. The vulnerability allows remote attackers to inject malicious PHP objects via unsafe deserialization, potentially achieving remote code execution without any valid credentials.
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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Identify AI Lab installation and versionLocate the AI Lab installation directory and find the version file or script that displays the product version. Common locations include a version.php file, a config file, or the main application entry point. Run any available version command or inspect the main application files for a version string.Affected if The installed version is found to be lower than 5.4.2 (for example, 5.4.1, 5.4.0, or earlier releases).
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Determine if PHP deserialization is in useSearch the AI Lab source code for usage of PHP deserialization functions such as unserialize(), json_decode() with object injection risk, or similar unsafe deserialization patterns. Inspect the application's input handling to see if user-controlled data reaches these functions.Affected if The application uses unserialize() or similar unsafe deserialization on data that can be supplied by unauthenticated users, without prior sanitization or validation.
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Verify the vulnerable endpoint is exposedIdentify web endpoints or API routes in AI Lab that handle serialized PHP objects or JSON data from unauthenticated requests. Test if these endpoints accept and process input without requiring authentication.Affected if The application exposes functionality that accepts unauthenticated input and passes it to deserialization functions, making the PHP Object Injection flaw reachable remotely.
A user is affected if AI Lab is running a version lower than 5.4.2 and the application exposes deserialization functionality 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 dataUpgrade AI Lab to version 5.4.2 or later to remediate this vulnerability. If immediate patching is not possible, disable the affected component and implement web application firewall rules to block deserialization-based attack patterns.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-42380 — 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-2026-42380 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
- No weaponised exploit code, or anything meant to cause harm
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