The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.0.43. This is due to the plugin allowing SVG file uploads via an unauthenticated AJAX endpoint (flo_form_submit) without proper file content validation. This makes it possible for unauthenticated attackers to upload malicious SVG files containing JavaScript that executes when an administrator views the uploaded file in the WordPress admin interface, leading to potential full site compromise.
CVE-2025-13159
HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-11-21. NVD baseline CVSS 7.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 32(Track)EG Risk 32/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 24%
- KEV
- Not listed
Published
November 21, 2025
Last Modified
April 15, 2026
References (4)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/flo-forms/trunk/admin/class-flo-forms-admin.php#L821
- security@wordfencehttps://plugins.trac.wordpress.org/browser/flo-forms/trunk/includes/class-flo-forms.php#L301
- security@wordfencehttps://plugins.trac.wordpress.org/browser/flo-forms/trunk/public/class-flo-forms-public.php#L502
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/8c529017-2fb9-4665-97a6-3ec062908299?source=cve
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Frequently asked(5)
What is CVE-2025-13159?
CVE-2025-13159 is a high vulnerability published on November 21, 2025. The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.0.43. This is due to the plugin allowing SVG file uploads via an unauthenticated AJAX endpoint (floformsubmit) without proper…
When was CVE-2025-13159 disclosed?
CVE-2025-13159 was first published in the National Vulnerability Database on November 21, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-13159 actively exploited?
CVE-2025-13159 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.6% of all scored CVEs.
What is the CVSS score of CVE-2025-13159?
CVE-2025-13159 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-13159?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-13159, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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