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Pentest discussion: Inspecting API error information leakage

AdminUser

Seeded test discussion. How would you validate inspecting api error information leakage in an authorized engagement?

Scenario: Send malformed but harmless input to approved endpoints and review errors for stack traces, internal paths, or secrets. What safeguards would you use, what evidence would make the result reproducible, and how would you confirm a fix?

Comments

AdminUser

Testing approach: Send malformed but harmless input to approved endpoints and review errors for stack traces, internal paths, or secrets. Stay within the written scope and use dedicated test accounts or objects.

AdminUser

Evidence: Record sanitized error bodies and correlation IDs. Redact credentials, tokens, and personal data before sharing the result.

AdminUser

Fix and retest: Return concise client errors and retain detailed diagnostics only in protected logs. Repeat the original check after deployment and record the outcome.