XSS in Mdempfle Advanced Iframe
CVE-2025-1439
The Advanced iFrame plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'advanced_iframe' shortcode in all versions up to, and including, 2024.5 due to insufficient input sanitization and output escaping on user supplied attributes through the 'src' attribute when the src supplied returns a header with an injected value . 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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/threat-intel/vulnerabilities/id/5ac1145b-5ab1-47a9-9117-4870c… (Third Party Advisory)
- plugins.trac.wordpress.org/changeset (Patch)
Frequently asked questions
- What is CVE-2025-1439?
- CVE-2025-1439 is a medium-severity vulnerability in Mdempfle Advanced Iframe, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-03-26.
- How severe is CVE-2025-1439?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2025-1439 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.