Easy Registration Forms <= 2.1.1 Cross-Site Request Forgery to Stored Cross-Site Scripting
Priority MEDIUM 41CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
The Easy Registration Forms WordPress plugin is vulnerable to Cross-Site Request Forgery due to missing nonce validation via the ajax_add_form function found in the ~/includes/class-form.php file which made it possible for attackers to inject arbitrary web scripts in versions up to, and including 2.1.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00721 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Easy Registration Forms | Easy Registration Forms | 2.1.1 – 2.1.1 | — | No fix listed | CNA |
- Easy Registration Forms VendorEasy Registration Forms Affected 2.1.1 – 2.1.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:easyregistrationforms:easy_registration_forms:*:*:*:*:*:wordpress:*:* | up to 2.1.1 | Vulnerable | Easy Registration Forms |
- cpe:2.3:a:easyregistrationforms:easy_registration_forms:*:*:*:*:*:wordpress:*:* Versions up to 2.1.1 Vulnerable ·Easy Registration Forms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-39353
- 2026-10-03 Alias added: GHSA-9fhm-63v7-pp72
References
More Easy Registration Forms vulnerabilities
- TI-2020-14318 Easy Registration Forms (ER Forms) Wordpress Plugin 2.0.6 allows an attacker to submit an… CVSS 3.1HIGH 8.8
- TI-2023-04722 Easy Registration Forms <= 2.1.1 - Authenticated (Subscriber+) Information Disclosure via Shortcode CVSS 3.1MEDIUM 4.3
Sources
- CVE-2021-39353 · CVE Program
- CVE-2021-39353 · NVD
- FIRST EPSS
- GHSA-9fhm-63v7-pp72 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences