CVE-2026-19859CWE-74

CVE-2026-19859

Medium · published September 6, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
10.4
In the wild
Unconfirmed
What it is

The JetFormBuilder WordPress plugin before 3.6.5.2 does not sanitize a request parameter before rendering it as message content, allowing unauthenticated users to execute arbitrary shortcodes registered on the site on any page displaying a form. Escaping is applied to that content before a later shortcode-expansion pass rather than after it, so the escaping can be bypassed.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00208 · 10.4th percentile
Weakness
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Published
2026-09-06T14:17Z
References (1)
https://wpscan.com/vulnerability/19c115a5-4280-4b78-a460-140ecfc78d4f/ · [email protected]
EPSS history
Timeline
  • 08 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 06 SEP 09:36Z
    JetFormBuilder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution via 'status' Parameter
    cvelistv5