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PatchSiren cyber security CVE debrief

CVE-2026-92212 jetmonsters CVE debrief

The JetFormBuilder plugin for WordPress has a Reflected Cross-Site Scripting vulnerability via the 'jfb_xss' URL query variable parameter in calculated fields up to version 3.6.5.3. This issue allows unauthenticated attackers to inject web scripts into pages if a user can be tricked into performing an action like clicking a link. The vulnerability requires a specific form configuration with both a URL Query Variable preset field and a Calculated Field referencing it.

Vendor
jetmonsters
Product
JetFormBuilder — Dynamic Blocks Form Builder
CVSS
MEDIUM 6.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-25
Original CVE updated
2026-09-25
Advisory published
2026-09-25
Advisory updated
2026-09-25

Who should care

Defenders responsible for WordPress installations with the JetFormBuilder plugin should assess exposure and prioritize verification and remediation efforts. This includes reviewing form configurations and ensuring proper input sanitization and output escaping.

Why it matters

CVE-2026-92212 is a Reflected Cross-Site Scripting vulnerability in the JetFormBuilder plugin for WordPress. Defenders should prioritize verification and remediation efforts to prevent potential XSS attacks. This involves checking for vulnerable versions, reviewing form configurations, and ensuring proper input sanitization and output escaping.

  • Defenders must verify and update the JetFormBuilder plugin to mitigate potential XSS attacks.
  • Review and adjust form configurations to prevent exploitation.
  • Implement additional monitoring for suspicious activities related to the plugin.

Technical summary

The JetFormBuilder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'jfb_xss' URL query variable parameter in calculated fields up to version 3.6.5.3. The vulnerability exists due to insufficient input sanitization and output escaping. This allows unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Defensive priority

Defenders should prioritize verifying and updating the JetFormBuilder plugin to mitigate potential XSS attacks. This involves checking for version 3.6.5.3 or earlier and ensuring proper input sanitization and output escaping.

Recommended defensive actions

  • Verify and update the JetFormBuilder plugin to the latest version.
  • Review form configurations for vulnerable preset fields and calculated fields.
  • Implement additional input sanitization and output escaping for custom or third-party plugins.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Evidence notes

The CVE record and NVD detail provide information on the vulnerability. Additional details are available in source references from [email protected], including code snippets and configuration requirements for exploitation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-92212 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-92212

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-92212 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-92212

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/assets/build/frontend/main.js

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/includes/blocks/render/calculated-field-render.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/includes/presets/sources/preset-source-query-var.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/templates/fields/calculated-field.php

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.