TI-2026-04418 Aliases CVE-2026-5063 GHSA-j9pc-2g9w-gcm3

NEX-Forms <= 9.1.11 - Unauthenticated Stored Cross-Site Scripting via POST Parameter Key Names

LOW 37CWE-79Published 2026-05-03 · Updated 2026-05-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via POST parameter key names in the submit_nex_form() function in versions up to, and including, 9.1.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00243 15th 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: Yes
Technical impact: Partial

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
webaways	NEX-Forms – Ultimate Forms Plugin for WordPress	up to 9.1.11	—	No fix listed	CNA

NEX-Forms – Ultimate Forms Plugin for WordPress Vendorwebaways Affected up to 9.1.11 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:basixonline:nex-forms::::::::	—	—	webaways

cpe:2.3:a:basixonline:nex-forms:*:*:*:*:*:*:*:* Versions — — ·webaways

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-5063
2026-10-03 Alias added: GHSA-j9pc-2g9w-gcm3

References

Other 2

TI-2023-01989 NEX-Forms < 8.4 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
TI-2023-00416 NEX-Forms < 8.4.4 - Authenticated Stored XSS CVSS 3.1MEDIUM 5.4
TI-2023-00257 NEX-Forms < 8.3.3 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
TI-2022-02901 NEX-Forms < 7.9.7 - Authenticated SQLi CVSS 3.1HIGH 8.8
TI-2015-07829 The nex-forms-express-wp-form-builder plugin before 4.6.1 for WordPress has SQL injection… CVSS 3.1CRITICAL 9.8
TI-2026-01610 Authorization bypass in webaways NEX-Forms – Ultimate Forms Plugin for WordPress CVSS 3.1HIGH 7.5

See all 41 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences