TI-2026-20487 Aliases CVE-2026-25369 GHSA-g23c-v634-9ffv

WordPress Flexmls® IDX plugin <= 3.15.9 - Reflected Cross Site Scripting (XSS) vulnerability

LOW 30CWE-79Published 2026-03-16 · Updated 2026-05-11

Key facts

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

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

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in flexmls Flexmls® IDX flexmls-idx allows Reflected XSS.This issue affects Flexmls® IDX: from n/a through <= 3.15.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00155 4th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
flexmls	Flexmls® IDX	up to 3.15.9	—	No fix listed	CNA

Flexmls® IDX Vendorflexmls Affected up to 3.15.9 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-25369
2026-10-03 Alias added: GHSA-g23c-v634-9ffv

References

Other 1

https://patchstack.com/database/Wordpress/Plugin/flexmls-idx/vulnerability/wordpress-flexmls-idx-plugin-3-15-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2025-19771 WordPress Flexmls® IDX Plugin Plugin <= 3.14.27 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
TI-2025-00731 Flexmls® IDX <= 3.14.27 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
TI-2024-09775 Flexmls® IDX Plugin <= 3.14.26 - Authenticated (Contributor+) Stored Cross-Site Scripting via API parameters CVSS 3.1MEDIUM 6.4
TI-2024-08088 Flexmls® IDX Plugin <= 3.14.22 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
TI-2025-41339 WordPress Flexmls® IDX plugin <= 3.15.7 - Open Redirection vulnerability CVSS 3.1MEDIUM 4.7

Sources

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