Flexmls® IDX <= 3.14.27 - Authenticated (Contributor+) Stored Cross-Site Scripting
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 Flexmls® IDX Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'idx_frame' shortcode in all versions up to, and including, 3.14.27 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
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-0863
- 2026-10-03 Alias added: GHSA-256m-jmr2-59pc
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1c8e814b-3828-4b3f-a9ad-b3758ab9b109?source=cve
- https://plugins.trac.wordpress.org/browser/flexmls-idx/tags/3.14.25/flexmls_connect.php#L92
- https://plugins.trac.wordpress.org/browser/flexmls-idx/tags/3.14.25/lib/base.php#L220
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3251292%40flexmls-idx&new=3251292%40flexmls-idx&sfp_email=&sfph_mail=
More flexmls vulnerabilities
- TI-2025-19771 WordPress Flexmls® IDX Plugin Plugin <= 3.14.27 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-20487 WordPress Flexmls® IDX plugin <= 3.15.9 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- 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
- CVE-2025-0863 · CVE Program
- CVE-2025-0863 · NVD
- FIRST EPSS
- GHSA-256m-jmr2-59pc · 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