CVE-2026-57668
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 Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Basix NEX-Forms nex-forms-express-wp-form-builder allows Stored XSS.This issue affects NEX-Forms: from n/a through <= 9.2.2.
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 confidenceStored XSS vulnerability in NEX-Forms WordPress plugin allows attackers to inject malicious JavaScript through form inputs that are not properly sanitized before being stored and rendered in web pages. When administrators or users view form submissions or the form builder interface, the injected scripts execute, potentially leading to session hijacking or credential theft.
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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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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Verify NEX-Forms plugin installation and versionAccess WordPress admin dashboard, go to Plugins > Installed Plugins, locate NEX-Forms and note the version number from the plugin description headerAffected if The installed version matches a version known to be affected by CVE-2026-57668 (compare your version against the vendor's security advisory for this CVE)
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Confirm form submissions feature is activeIn WordPress admin, navigate to NEX-Forms > Forms and verify that at least one form exists and is published or active on the siteAffected if Forms are created and active, allowing external users to submit data that gets stored in the WordPress database
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Inspect stored form submissions for malicious scriptsAccess NEX-Forms > Submissions in the admin panel, review recent form entries for any content containing script tags, javascript: URLs, or event handler attributes (onclick, onerror, etc.)Affected if Any stored form submissions contain unsanitized HTML or JavaScript code that could execute when viewed in the admin interface
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Check form builder interface for XSS vectorsOpen the NEX-Forms form builder, create or edit a form, add a text input field, submit test data containing <script>alert(1)</script>, save, and view the form in the frontend or admin to see if the script executesAffected if The injected script tag or JavaScript executes when the form or its submissions are displayed, indicating improper output encoding
You are affected if NEX-Forms plugin is installed with a vulnerable version AND the plugin's form submission or form builder feature is active and storing/displaying unsanitized user input.
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 NEX-Forms to the latest patched version; if no update exists, implement output encoding and input validation on all form fields and admin interface rendering points.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 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 $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57668 — 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-2026-57668 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
- No spam, self-promotion, credentials, or personal data