CVE-2026-59517: hassantafreshi Easy Form Builder unauthenticated XSS

CVE-2026-59517 · Severity: high · CVSS 7.1 · Published 2026-07-23

Easy Form Builder is a WordPress plugin used to create and manage custom forms on websites. A security vulnerability in versions 4.0.12 and earlier allows unauthenticated attackers to inject malicious scripts into the site. If a site administrator or visitor interacts with a specially crafted link or page, the attacker could steal session information, redirect users to malicious websites, or deface the site.

Technologies: Hassan Tafreshi Easy Form Builder. Vendors: Hassan Tafreshi.

Quick answers

Is CVE-2026-59517 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-59517 being exploited in the wild.
How severe is CVE-2026-59517?
High severity, with a CVSS score of 7.1, published 23 July 2026.
Which products and versions are affected?
Hassan Tafreshi Easy Form Builder <= 4.0.12.
Is there a fix for CVE-2026-59517?
A patch was published on 2026-07-23: Patch available in version 4.0.13 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-59517 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-59517?
Check whether you run Hassan Tafreshi Easy Form Builder at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Stored Cross-Site Scripting (XSS) vulnerability exists in the Easy Form Builder plugin for WordPress (versions up to and including 4.0.12). The flaw stems from improper neutralization of user-supplied input during web page generation (CWE-79). An unauthenticated remote attacker can exploit this by sending a malicious payload that is subsequently executed in the browser of a victim, typically a site administrator, when they view the affected page. Successful exploitation requires minimal user interaction and can lead to session hijacking or unauthorized actions performed in the context of the victim's browser. The issue is resolved in version 4.0.13.

Affected products

  • hassantafreshi Easy Form Builder <= 4.0.12

Timeline

  • 2026-06-28: other: Vulnerability reported by researcher dutafi
  • 2026-07-21: advisory: Patchstack advisory published
  • 2026-07-23: disclosed: CVE published to NVD dataset
  • 2026-07-23: patched: Patch available in version 4.0.13

References

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