Individual skill
exploiting-nosql-injection-vulnerabilities
Detect and exploit NoSQL injection vulnerabilities in MongoDB, CouchDB, and other NoSQL databases to demonstrate authentication bypass, data extraction, and unauthorized access risks.
internal/tools/skills/data/web-application-security/exploiting-nosql-injection-vulnerabilities/SKILL.md
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- nosql-injection Declared skill tag
- mongodb Declared skill tag
- authentication-bypass Declared skill tag
- injection-attack Declared skill tag
- web-security Declared skill tag
- database-security Declared skill tag
- api-testing Declared skill tag
- data Derived category
- security Derived category
- testing Derived category
- data-databases Derived category
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# Exploiting NoSQL Injection Vulnerabilities
## When to Use
- During web application penetration testing of applications using NoSQL databases
- When testing authentication mechanisms backed by MongoDB or similar databases
- When assessing APIs that accept JSON input for database queries
- During bug bounty hunting on applications with NoSQL backends
- When performing security code review of database query construction
### How to CONFIRM a Hit (avoid false negatives)
- The positive signal is a **behavioural differential caused by an operator**, not a generic error: an operator-injection payload (`{"$ne":null}` / `{"$gt":""}`) returns a logged-in session / different record set than a benign value, OR a `$where`+sleep payload adds a measurable delay, OR a `$regex` boolean probe flips the response between two known states.
- Confirm auth bypass by diffing three requests: valid creds, invalid creds, and the operator payload. The injection is real only if the operator response matches/exceeds the "valid" response while plain-invalid stays rejected.
- For blind extraction, prove the channel works: anchor a `$regex` that MUST match (`^`) and one that MUST NOT, and confirm the two responses differ before extracting characters.
- Do NOT conclude negative until you have tried ALL of these encodings/forms: