CVE-2026-39553
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 · uneditedImproper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Select-Themes WaveRide allows PHP Local File Inclusion. This issue affects WaveRide: from n/a through 1.4.
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 confidenceLocal File Inclusion vulnerability in Select-Themes WaveRide (versions up to 1.4) allows attackers to manipulate filename parameters in PHP include/require statements to read arbitrary files from the server filesystem, potentially exposing sensitive configuration data or enabling remote code execution.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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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Confirm WaveRide theme installationLocate the theme directory - typically at wp-content/themes/waveride or /themes/waveride in the web root. Check for theme style.css with 'WaveRide' or 'Select-Themes' in the header.Affected if The WaveRide theme by Select-Themes is present in the web application
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Identify theme versionOpen the theme style.css or theme.json file in the waveride theme folder and locate the Version: field in the theme header comment.Affected if Unable to determine version or version cannot be compared to a patched release
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Locate file inclusion code patternsSearch theme PHP files for include, require, include_once, or require_once statements that use variables derived from $_GET, $_POST, or $_REQUEST parameters without proper sanitization. Look for patterns like 'include($_GET["page"])' or similar dynamic file inclusion.Affected if Theme files contain dynamic file inclusion using user-supplied input without validation or sanitization checks such as basename(), realpath(), or whitelist validation
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Test for LFI vulnerabilityIf dynamic file inclusion is found, attempt a controlled test by passing a benign local file path (such as ../../../../etc/passwd or ..\..\..\windows\system32\drivers\etc\hosts) to the identified parameter and observe if file contents are returned. Only perform this test with authorization on non-production systems.Affected if The application returns contents of local files when path traversal sequences are provided to file inclusion parameters
If the WaveRide theme is installed and contains dynamic file inclusion code using unsanitized user input, the environment is likely affected by this LFI vulnerability.
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 dataUpdate WaveRide to the latest patched version; if unavailable, implement strict input validation/whitelisting on file inclusion parameters and disable allow_url_include in PHP configuration.
- Consultation4.0 h
- Implementation8.0 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 $4,880.
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Free · runs locallyCheck whether your project pulls in CVE-2026-39553 — 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-2026-39553 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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