The web app your customers log in to every day is also the front door an attacker is most likely to test first. The bugs that matter aren't always on the public homepage — they're deeper, after the login, in the parts of the app a normal scanner never sees.
We test it the way a careful, patient attacker would. We log in like your users, walk the journeys they walk, and try the things they shouldn't be allowed to do. When something works that shouldn't, you get a short, plain proof your engineers can replay — and a one-command way to confirm it's fixed.
Just your domain and your work email. We'll handle the rest.
What it does
Broken access control, cryptographic failures, injection, insecure design, security misconfiguration, vulnerable components, identification and authentication failures, software and data integrity failures, security logging and monitoring failures, SSRF. Every category tested with proof of exploitation where the bug exists.
React, Vue, Angular, Svelte — we render the app in a real browser context, observe the routes the framework declares, and walk the state transitions. Findings on routes that only exist after a login — or after a specific user action — surface where a static crawler would miss them entirely.
You give us credentials — or we use a verification link, OAuth flow, or session-cookie injection. The platform maintains session state across the engagement, exercises endpoints in their authenticated form, and tests the authorisation boundaries between roles.
SQL injection (boolean, time-based, union, out-of-band), reflected and stored XSS, server-side request forgery (with metadata-service awareness), CSRF (token validation, SameSite, origin), IDOR with role permutation, OS command injection, insecure deserialisation across Java, .NET, Python, and PHP runtimes.
Server-side template injection (SSTI), prototype pollution, GraphQL introspection abuse, JWT confusion, race-condition exploitation on critical endpoints, HTTP request smuggling. The classes that don't always make the OWASP Top 10 but carry critical-severity impact when present.
Some bugs only surface mid-flow — after step 3 of a 5-step checkout, after an admin invite, after a permission-change. The platform preserves session context across the whole engagement, so the depth of finding matches what a patient attacker would surface manually.
What you get
CELVEX Groupcelvex retest against the same finding after the fixFind. Prove. Fix. Verify. — applied to web testing
SPA rendering, authenticated session, role permutation. Routes the static crawlers miss surface here.
Reflected XSS captured with the payload and the rendered DOM. SQLi captured with the time-delta. SSRF captured with the OOB callback.
Where the input-validation belongs in the framework you're using. Where the parameterised query should have been written.
The retest replays the same exploit. The fix returns fix-confirmed — or you know it didn't and the build can fail.
Where it fits in CTEM
Web applications remain the highest-volume entry point in modern breach data. CTEM's Validation stage is where the work of confirming exploitability happens; the OWASP Top 10 plus the modern classes above are the test suite that defines whether you're meeting it. Proof Capsule makes the result verifiable to your engineers, your auditors, and your insurer.
Start where it costs you nothing
Drop your domain. We'll quietly look at your external footprint and send a short, plain-language report — with at least one real finding your team can verify themselves. No sales pressure. No surprise calls.
Just your domain and your work email. We'll handle the rest.