OWASP / OWASP/ASVS

Clarification: 1.5.3 "consistent"

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V1 (prev V5)
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Description

Verify that different parsers used in the application for the same data type
(e.g., JSON parsers, XML parsers, URL parsers), perform parsing in a
consistent way and use the same character encoding mechanism to avoid
issues such as JSON Interoperability vulnerabilities or different URI or file
parsing behavior being exploited in Remote File Inclusion (RFI) or
Server‑side Request Forgery (SSRF) attacks.

For many data types, there is no single industry standard for "consistent" different implementations make different valid choices. Discovering every single implicit and explicit parser across a large, multi-language, microservices architecture is nearly impossible.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the raw .md master text for requirement 1.5.3 and compare it with the referenced 5.0 content, including the linked V6 Cryptography document as a model for requirement wording. Clarify what "consistent" means across parsers and encodings, and define wording that is actionable without requiring exhaustive discovery across a multi-language microservices architecture.

Written by the indexing model from the issue text.

Assessment

Domain
documentation, security
Issue type
Documentation
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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