CVE-2025-26776
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in NotFound Chaty Pro allows Upload a Web Shell to a Web Server. This issue affects Chaty Pro: from n/a through 3.3.3.
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 confidenceUnrestricted file upload vulnerability in Chaty Pro plugin allows authenticated or unauthenticated attackers to upload executable files (web shells) directly to the web server. Successful exploitation enables remote code execution by allowing dangerous file types (.php, .asp, etc.) to be uploaded without proper validation.
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
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 Chaty Pro plugin is installedNavigate to WordPress admin plugins page or check /wp-content/plugins/ directory for 'chaty' folder. Read the main plugin file header for version number.Affected if Chaty Pro plugin is present on the WordPress installation
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Identify installed Chaty Pro versionOpen the main Chaty Pro plugin file (typically chaty.php) and locate the 'Version' header comment, or check the plugins admin page for the version number.Affected if Installed version matches or falls within the vulnerable version range (compare to known affected versions if available)
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Verify file upload functionality is enabledCheck WordPress Media Library settings and Chaty Pro plugin settings to confirm upload features are active. Review if any upload forms or endpoints are publicly accessible.Affected if File upload functionality is enabled and exposed (particularly if accessible to unauthenticated users)
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Inspect upload directory configurationCheck wp-content/uploads/ directory and any custom upload paths configured in Chaty. Verify if uploads are stored within webroot and if .htaccess or equivalent restrictions exist.Affected if Uploads are stored inside webroot and script execution is not disabled in the upload directory
A user is affected if Chaty Pro plugin is installed with a vulnerable version and the unrestricted file upload feature is enabled/accessible, allowing dangerous file types to be uploaded to a web-accessible directory.
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 Chaty Pro to latest version if available; otherwise implement strict server-side file type validation, restrict uploads to safe whitelist extensions, store uploads outside webroot, and disable script execution in upload directories.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-26776 — 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-2025-26776 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