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TI-2025-08369 Aliases CVE-2025-9129GHSA-pqgg-4fqm-2fwc

Flexi <= 4.28 - Authenticated (Contributor+) Stored Cross-Site Scripting via flexi-form-tag Shortcode

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 Flexi plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin for WordPress's flexi-form-tag shortcode in all versions up to, and including, 4.28 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, 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 0.00247 16th 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
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
odudeFlexi – Guest Submitup to 4.28—No fix listedCNA
  • Flexi – Guest Submit Vendorodude Affected up to 4.28 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-9129
  2. 2026-10-03 Alias added: GHSA-pqgg-4fqm-2fwc

References

Other 3

  • TI-2022-03725 User Post Gallery <= 2.19 - Unauthenticated RCE CVSS 3.1CRITICAL 9.8
  • TI-2024-09272 Crypto <= 2.18 - Authentication Bypass via log_in CVSS 3.1CRITICAL 9.8
  • TI-2024-09271 Crypto <= 2.19 - Authentication Bypass via register CVSS 3.1CRITICAL 9.8
  • TI-2024-09273 Crypto <= 2.15 - Cross-Site Request Forgery to Authentication Bypass CVSS 3.1HIGH 8.8
  • TI-2025-23654 WordPress Flexi – Guest Submit Plugin <= 4.28 - Local File Inclusion vulnerability CVSS 3.1HIGH 8.1
  • TI-2025-10990 Crypto Tool <= 2.22 - Missing Authentication to Unauthenticated Limited File Deletion CVSS 3.1MEDIUM 5.3
See all 8 →

Sources

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