CVE-2026-101921 json
WPForms <= 2.0.2.1 - Reflected Cross-Site Scripting via 'query_var' Smart Tag in iframe srcdoc Attribute
published 30d ago modified 27d ago also EUVD-2026-96278
- cvss
- 4.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
The WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'attacker-chosen key referenced by the smart tag (e.g. "x")' parameter in all versions up to, and including, 2.0.2.1 due to insufficient input sanitization and output escaping. This makes it possible for 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. Exploitation requires that a site administrator has previously saved a form whose description embeds a {query_var} Smart Tag inside an iframe srcdoc attribute and has enabled Show Description on a public-facing page.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 29d ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- smub WPForms – AI Form Builder for WordPress – Contact Forms, Payment Forms, Survey Form, Quiz & More
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/39e1abcf-c3b6-4c53-a3dc-8a5741f24cca?source=cve
- plugins.trac.wordpress.org /browser/wpforms-lite/tags/2.0.2.1/src/SmartTags/SmartTags.php#L673
- plugins.trac.wordpress.org /browser/wpforms-lite/tags/2.0.2.1/src/SmartTags/SmartTag/QueryVar.php#L34
- plugins.trac.wordpress.org /browser/wpforms-lite/tags/2.0.2.1/src/Frontend/Classic.php#L323
- plugins.trac.wordpress.org /changeset?reponame=&new=3730630%40wpforms-lite&old=3709178%40wpforms-lite
- plugins.trac.wordpress.org /changeset/3730630/wpforms-lite/trunk/src/SmartTags/SmartTags.php
Sources
- CVE List CVE-2026-101921
- NVD CVE-2026-101921
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.