Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-19861
Unknown JetFormBuilder — Dynamic Blocks Form Builder — JetFormBuilder < 3.6.5.2 - Unauthenticated Stored XSS via WYSIWYG Field in Notification Emails
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N R C L L N 4.7 .0017 5.3 —
AFFECTED
Product Versions Fixed
JetFormBuilder — Dynamic Blocks Form Builder unspecified —
TIMELINE
Aug 14 Reserved by WPScan
Sep 5 Published (CNA: WPScan)
Sep 6 EXPLOIT PUBLISHED — CVE-2026-19861 (Unknown JetFormBuilder — Dynamic Blocks Form Builder). Public exploit reference added.
Description
The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.2 does not properly sanitise and escape a form field's value before including it in the HTML notification emails it sends, allowing unauthenticated users to inject arbitrary HTML into messages delivered to administrators and other recipients. Whether injected script executes depends on the recipient's mail client, but the injected markup is rendered regardless.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 14, 2026 | Reserved | Reserved by WPScan |
| September 5, 2026 | Published | Published (CNA: WPScan) |
| September 6, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-19861 (Unknown JetFormBuilder — Dynamic Blocks Form Builder). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | JetFormBuilder — Dynamic Blocks Form Builder | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19861 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
