Broken access control is the number-one risk in the OWASP Top 10 — and the single most common source of serious findings we report. This is dedicated testing of authorization: we create multiple users and roles and systematically try to read, write and escalate beyond our permissions, as a focused part of a full web application penetration test.
IDOR and access-control flaws are invisible to scanners because the request looks perfectly valid — only the authorization decision is wrong. We build a matrix of every role against every function and object, then test each cell by hand for horizontal and vertical bypass.
Broken Access Control & IDOR Testing: manual, exploit-led coverage — web, API, cloud, network and AI-agent security.
Why it matters
One IDOR can expose every customer record at once, and unlike a crash it leaves no trace. Because the flaw is a missing check rather than a malformed input, it is found only by deliberate, role-aware testing — never by a scan.
What we test
Horizontal access control (cross-user IDOR)
Vertical access control (privilege escalation)
Object-level authorization on every reference
Function-level authorization and hidden endpoints
Forced browsing and parameter tampering
Mass assignment and property-level authorization
Common vulnerabilities we uncover
IDOR exposing other users' records
Privilege escalation to admin
Unauthorised access to hidden functions
Mass assignment overwriting protected fields
Tenant or account boundary bypass
Sensitive data access via reference tampering
Our methodology
Scoping & rules of engagement. We agree objectives, targets and boundaries for your broken access control & idor testing, so testing is safe, authorized and focused on what matters to your business.
Reconnaissance & mapping. We enumerate the full attack surface in scope, building a complete picture before any exploitation begins.
Manual exploitation. Our senior testers chain vulnerabilities by hand — going far beyond automated scanners — to prove real, demonstrable impact.
Analysis & reporting. Every finding is triaged, risk-rated with CVSS and written up with a copy-paste reproduction and clear remediation.
Remediation support & free retest. We support your team through the fixes and retest the remediated issues to confirm they are genuinely closed.
Tools & techniques
We provision at least two accounts per role and replay each one's requests in another's session and context, walking object references, hidden endpoints and mass-assignment paths. Every confirmed bypass is documented as a concrete cross-user or privilege-escalation proof.
For multi-tenant products this connects to our SaaS penetration testing, and for the API layer, our API penetration testing — all within full web application penetration testing.
When you need this engagement
Your app has multiple roles or user-owned data
You expose identifiers in URLs or API calls
You run a multi-tenant or account-based model
You have added roles, sharing or permissions
You want proof your authorization actually holds
What you receive
Confirmed access-control findings with evidence
Role-by-object test matrix results
Reproduction steps per finding
Server-side authorization remediation guidance
Attestation letter where required
Complimentary retest after fixes
What’s included in your report
Every broken access control & idor testing engagement concludes with a comprehensive, board-ready report and a working session to walk your team through it. Your report includes:
An executive summary with overall risk posture for non-technical stakeholders
Detailed technical findings, each with a step-by-step, copy-paste reproduction
CVSS v3.1 severity ratings and business-impact context for every issue
Prioritized, actionable remediation guidance your engineers can apply directly
A complimentary retest to confirm fixes and update finding status
A formal attestation letter for customers, auditors and compliance programs
After your broken access control & idor testing, you will have clear, evidence-based visibility into your real security risk — not a scanner’s guesswork. You will know exactly which weaknesses an attacker could exploit, what the business impact would be, and the precise steps to fix them in priority order. Teams use our findings to close critical gaps, satisfy customer and regulator security requirements, and demonstrate due diligence to their board. With a complimentary retest included, you also get documented proof that the issues are genuinely resolved.
Engagement details & logistics
Every broken access control & idor testing starts with a short, no-obligation scoping call to understand your goals, environment and constraints, followed by a fixed-price proposal and a clear statement of work. Most engagements are delivered fully remotely, with on-site work arranged where it genuinely adds value. Throughout testing we maintain an agreed communication cadence and escalate any critical, high-impact finding to you immediately rather than waiting for the final report. All work is performed under a signed NDA with strict data-handling controls, using safe, non-disruptive techniques and carefully coordinated rules of engagement to protect your production systems. On completion you receive your report and a walkthrough session, followed by a complimentary retest once your fixes are in place. Typical engagements are booked one to three weeks in advance, and urgent or pre-deadline testing can often be accommodated — just ask at hi@agentoffense.com.
Why organizations choose AgentOffense
Our broken access control & idor testing is delivered by senior offensive-security engineers who test the way real attackers do — manually, creatively and with a relentless focus on proving genuine, demonstrable impact. Here is what sets our engagements apart:
Manual, exploit-driven testing that chains vulnerabilities the way a real attacker would, going far beyond what automated scanners can find.
Reproducible proof for every finding, with copy-paste reproduction steps your engineers can follow and independently verify.
Honest severity calibration so you invest in fixing what genuinely matters and avoid wasting effort on false positives and noise.
Clear, business-focused reporting that speaks to engineers and executives alike, tying every issue to real-world impact.
A complimentary retest included, so you get documented proof that your fixes actually close the attack path.
Responsible, collaborative delivery with a named point of contact and secure handling of all data throughout the engagement.
Explore related services
Broken Access Control & IDOR Testing is frequently scoped alongside our other offensive-security services for broader coverage. Explore related engagements that complement it:
Web Application Penetration Testing — Manual web application penetration testing against the OWASP Top 10 and business-logic flaws. Exploit-driven testing with…
SaaS Penetration Testing — SaaS penetration testing — multi-tenant isolation, RBAC and API security tested by hand.
API Penetration Testing — REST and GraphQL API penetration testing against the OWASP API Top 10 — BOLA, BFLA, mass…
How much does Broken Access Control & IDOR Testing cost?
Every broken access control & idor testing is scoped and priced individually, so you pay for exactly the coverage you need — with no hidden extras. After a short, no-obligation scoping call we send a fixed-price quote, usually within one business day, with clear deliverables, a firm timeline and a complimentary retest included. The price of your broken access control & idor testing depends on the size and complexity of the target and the depth of testing required, so you always know the cost up front before any work begins.
