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Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2026-2707

MEDIUM · 6.4 CVSS v3.1 Published 2026-03-11
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
70/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available

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 · unedited
The weForms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API entry submission endpoint in all versions up to, and including, 1.6.27. This is due to inconsistent input sanitization between the frontend AJAX handler and the REST API endpoint. When entries are submitted via the REST API (`/wp-json/weforms/v1/forms/{id}/entries/`), the `prepare_entry()` method in `class-abstract-fields.php` receives the WP_REST_Request object as `$args`, bypassing the `weforms_clean()` fallback that sanitizes `$_POST` data for frontend submissions. The base field handler only applies `trim()` to the value. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts into form entry hidden field values via the REST API that execute when an administrator views the form entries page, where data is rendered using a Vue.js `v-html` directive without escaping.

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
How this class of weakness works · CWE-79

Untrusted input is placed into a web page without being neutralised, so an attacker's markup or script executes in another user's browser. That can hijack sessions, capture keystrokes, or silently perform actions as the victim. Fixing it properly means context-aware output encoding everywhere data meets HTML, backed by a content-security policy as a second line of defence.

General guidance for the cross-site scripting (xss) class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

weForms version 1.6.28 or later (the first version containing the REST API input sanitization fix from PR #263)

  1. Check the current installed version of the weForms plugin using the WordPress admin dashboard under Plugins > Installed Plugins
  2. Navigate to the weForms GitHub repository and review the patch at https://github.com/BoldGrid/weforms/pull/263 to understand the fix implementation
  3. Upgrade weForms to the version that includes the patch - typically version 1.6.28 or later which contains the REST API input sanitization fix
  4. After upgrading, verify the fix is applied by checking that the `prepare_entry()` method now properly sanitizes input from the REST API request object
  5. Test the REST API endpoint `/wp-json/weforms/v1/forms/{id}/entries/` to confirm it now properly sanitizes input
  6. Ensure any custom code or integrations using the weForms REST API continue to function after the update
  7. Review form entries as an administrator to confirm the Vue.js rendering now properly escapes content
Caveat Low risk - this is a security patch focused on input sanitization; however, any existing entries with previously injected malicious scripts will remain in the database and should be manually reviewed and cleaned if necessary

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

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Peer-ranked notes from engineers who’ve handled CVE-2026-2707 in production — separate from our analysis above.

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