A01:2025: Broken Access Control
Access-control failures including IDOR, missing authorization, JWT/SAML weaknesses. Maintains the #1 position from 2021. Server-Side Request Forgery (SSRF) was rolled into this category in 2025.
How it's found
Identified through authenticated and unauthenticated request tampering, replaying requests with swapped object identifiers and session tokens to test whether authorization is enforced server-side.
Vulnerable vs. safe
app.get('/api/orders/:id', (req, res) => res.json(db.getOrder(req.params.id)));app.get('/api/orders/:id', (req, res) => res.json(db.getOrder(req.params.id, req.user.id)));Standards mapping
- References
- https://owasp.org/Top10/2025/
How TurboPentest tests for this (white-box)
This weakness (Improper Access Control) is caught by white-box static analysis when you connect a GitHub repo: IntegSec's Opengrep SAST rule pack carries 1 rule for it, flagging the issue directly in your source code as part of the pentest.
Frequently asked questions
What is A01:2025 Broken Access Control?
Access-control failures including IDOR, missing authorization, JWT/SAML weaknesses. Maintains the #1 position from 2021. Server-Side Request Forgery (SSRF) was rolled into this category in 2025.
How do you find Broken Access Control?
Identified through authenticated and unauthenticated request tampering, replaying requests with swapped object identifiers and session tokens to test whether authorization is enforced server-side.
Which CWEs map to A01:2025?
A01:2025 maps to CWE-284, CWE-285, CWE-639.
Does TurboPentest test for Broken Access Control?
This weakness (Improper Access Control) is caught by white-box static analysis when you connect a GitHub repo: IntegSec's Opengrep SAST rule pack carries 1 rule for it, flagging the issue directly in your source code as part of the pentest.
Related OWASP categories
- OWASP Top 10 (Web)A02:2025: Security Misconfiguration
- OWASP Top 10 (Web)A03:2025: Software Supply Chain Failures
- OWASP Top 10 (Web)A04:2025: Cryptographic Failures
- OWASP Top 10 (Web)A05:2025: Injection
- OWASP Top 10 (Web)A06:2025: Insecure Design
- OWASP Top 10 (Web)A07:2025: Identification and Authentication Failures
Written and reviewed by
Michel Chamberland - Founder & CEO, IntegSec
CISSP, OSCP, OSCE, CEH, GIAC, CCSK · 20+ years in offensive security
Michel has spent 20+ years on offensive security teams including IBM X-Force Red and Trustwave SpiderLabs, leading penetration tests, red team engagements, and breach response for Fortune 500 customers. He is the founder of IntegSec and the architect of TurboPentest.
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