What vulnerabilities are found in Webflow apps?
Get instant answers about your app's security.
Short Answer
Webflow app scans surface the same cluster of vulnerabilities repeatedly: custom code xss, cms content visibility, third-party script risks. The pattern is stable across Webflow versions.
Detailed Answer
The vulnerabilities actually found in Webflow apps
Not theoretical OWASP categories — specifically what appears when VAS, security researchers, and bug bounty hunters look at live Webflow deployments:
- **[HIGH]** **Custom Code XSS** *(medium likelihood)*
Pasted JavaScript embeds can introduce XSS vulnerabilities.
*Fix:* Audit all custom code embeds. Only paste from trusted sources.
2. **[MEDIUM]** **CMS Content Visibility** *(medium likelihood)*
CMS data may be exposed in page source if visibility not configured.
*Fix:* Configure Collection visibility settings. Don't store secrets in CMS.
3. **[HIGH]** **Third-Party Script Risks** *(medium likelihood)*
Embedded scripts have full page access.
*Fix:* Review all third-party scripts. Minimize external dependencies.
4. **[MEDIUM]** **Form Data Handling** *(medium likelihood)*
Forms lack server-side validation—client-only checks.
*Fix:* Use Webflow integrations for processing. Don't collect sensitive data.
5. **[MEDIUM]** **Missing Security Headers** *(high likelihood)*
Custom security headers require manual configuration.
*Fix:* Add headers via custom code or Cloudflare proxy.
Distribution by severity
Of the findings above, 0 sit at critical impact (full data exposure), 2 at high (significant data or account compromise), and the rest are medium-or-lower (attack surface expansion). A first-scan Webflow app typically has 2–4 findings from this list live at any moment.
How to know which ones are in your app
Run a VAS scan. Each finding above is tested directly — we query your database to verify access controls are active, scan bundles for key patterns, probe auth endpoints for rate limiting, and check security headers in live responses. Output is a per-finding report with evidence and fix.
Security Research & Statistics
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
developers using vibe coding platforms like Lovable, Bolt, and Replit
Source: Combined platform statistics 2024-2025
Expert Perspectives
“There's a new kind of coding I call 'vibe coding', where you fully give in to the vibes, embrace exponentials, and forget that the code even exists.”
“It's not really coding - I just see stuff, say stuff, run stuff, and copy paste stuff, and it mostly works.”
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Get Starter ScanMore Questions About This Topic
How severe are the vulnerabilities typically found in Webflow apps?
Webflow apps lean critical: Custom Code XSS alone can expose the full user dataset in one query. Compare to e.g. missing security headers (medium) which require additional exploitation. Triage accordingly: critical findings are measured in minutes-to-breach, mediums in weeks.
How do I fix vulnerabilities once they're found in my Webflow app?
Each finding comes with a specific fix. Example: for "Custom Code XSS" → Audit all custom code embeds. Only paste from trusted sources. VAS exports these as markdown you can feed directly into Webflow's AI (or any other AI assistant) to apply the fix in-place. Re-scan afterward to confirm.
Can vulnerabilities in Webflow apps be exploited by a non-expert attacker?
Most can. Extracting an exposed API key is a single "view source" operation. Querying a table without RLS is a `curl` command. Exploiting missing rate limiting requires scripting skills equivalent to "follow a tutorial." Only a handful of the findings above (e.g., chained auth bypass) require specialist knowledge — the rest are routinely exploited by automated scanners with zero human involvement.
Explore Related Resources
More on Webflow Security
Every angle of Webflow security — from the specific findings we detect to step-by-step fixes.
Webflow Security Scanner
Hub page: scan your Webflow app for vulnerabilities.
Webflow Security Risks
Specific risks we find in Webflow apps, with real-world examples.
Webflow Security Issues
Issues grouped by severity with detection and fix steps.
Webflow Best Practices
Remediation playbook derived from Webflow's actual failure modes.
Is Webflow Safe?
Honest assessment of Webflow's production readiness.
Webflow Security Checklist
Pre-launch checklist covering every finding class for Webflow.
How to Secure Webflow Apps
Step-by-step hardening guide for Webflow deployments.
Can Webflow Apps Be Hacked?
Attack vectors specific to Webflow and how they get exploited.