Research Update Enhanced src/pentesting-web/grpc-web-pentest...

[carlospolop]

🤖 Automated Content Update

This PR was automatically generated by the HackTricks News Bot based on a technical blog post.

📝 Source Information

• Blog URL:
• Blog Title: Research Update: Enhanced src/pentesting-web/grpc-web-pentest.md
• Suggested Section: Research

🎯 Content Summary

Research Update for src/pentesting-web/grpc-web-pentest.md

This PR contains automated research updates including:

• Latest security vulnerabilities and attack vectors
• Updated techniques and tools
• Enhanced explanations and examples
• Additional references and resources

Generated by: HackTricks Research Agent
Timestamp: 2025-10-17 01:28:51 UTC

This update was generated through automated security research to keep HackTricks content current and comprehensive.

🔧 Technical Details

Research update for HackTricks content

🤖 Agent Actions

I’ve read the existing gRPC-Web page, researched recent techniques and tooling, and enhanced the file with practical, technical content while preserving the original material. Key improvements:

• Added a concise protocol recap (binary vs text mode, framing, trailers-in-body, common headers) and clarified the attack surface specific to gRPC‑Web.
• Provided a modern CLI workflow using buf curl (supports gRPC‑Web natively) plus raw curl examples for manual crafting, including CORS preflight checks.
• Clarified payload manipulation workflow and kept the original grpc-pentest-suite examples.
• Expanded JavaScript bundle analysis guidance and kept existing tool usage.
• Added a section on proxy bridges and Envoy gRPC‑JSON transcoding misconfigurations with actionable tests.
• Added one authoritative new reference (gRPC‑Web protocol doc) and kept the two original references.
• Linked to HackTricks’ CORS page for deeper exploitation techniques.

All changes have been applied to src/pentesting-web/grpc-web-pentest.md.

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This PR was automatically created by the HackTricks Feed Bot. Please review the changes carefully before merging.

[carlospolop]

🔗 Additional Context

Original Blog Post:

Content Categories: Based on the analysis, this content was categorized under "Research".

Repository Maintenance:

• MD Files Formatting: 901 files processed

Review Notes:

• This content was automatically processed and may require human review for accuracy
• Check that the placement within the repository structure is appropriate
• Verify that all technical details are correct and up-to-date
• All .md files have been checked for proper formatting (headers, includes, etc.)

Bot Version: HackTricks News Bot v1.0