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[Home](/)[Vulnerabilities](/vulnerabilities)Server-Side Request Forgery[Back to Vulnerabilities](/vulnerabilities)Testing methodologyHow APVISO Tests for SSRF
=========================

SSRF lets attackers make a server request internal or cloud metadata resources, potentially bypassing network boundaries or exposing credentials.

Common Locations
----------------

- Webhook configuration
- URL importers
- PDF generators
- Image fetchers
- Integration setup forms

APVISO Test Vectors
-------------------

- Internal IP ranges
- Cloud metadata probes
- DNS callback domains
- Redirect chains

Evidence Collected
------------------

- URL parameter or feature
- Outbound callback proof
- Blocked or allowed destination behavior
- Recommended allowlist controls

Remediation Themes
------------------

- Allowlist destinations
- Block internal ranges
- Disable redirects where possible
- Use cloud metadata protections

Methodology
-----------

SSRF testing is about finding places where the application fetches a URL on behalf of the user. APVISO identifies URL-accepting features during reconnaissance, then tests whether those features can reach destinations they should never contact.

The pentester agent checks internal ranges, metadata services, redirect behavior, DNS callbacks, and protocol handling. The lead agent distinguishes simple URL validation gaps from meaningful server-side request behavior that could expose internal services or credentials.

Findings include the feature, payload shape, observed callback or response evidence, and mitigation guidance. APVISO emphasizes allowlists, network egress controls, metadata protections, and safe redirect handling so teams can close the class of issue rather than patch one payload.

Frequently Asked Questions
--------------------------

Can APVISO detect blind SSRF?▾Yes. APVISO can use out-of-band callback evidence and timing behavior to identify SSRF even when the vulnerable feature does not return the server response.

Which features are most likely to have SSRF?▾Webhook setup, URL previews, import-from-URL features, PDF rendering, image processing, and integration connectors are common SSRF locations.

Related Terms
-------------

[Ssrf](/glossary/ssrf)[Api Security](/glossary/api-security)[Security Misconfiguration](/glossary/security-misconfiguration)

Test for Server-Side Request Forgery with APVISO
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