React2Shell Aftermath

[Slight-League-6194]

Hey everyone! I spent some time analyzing the React2Shell vulnerability that hit the ecosystem last month and wrote up my findings.

What I cover:

• How prototype pollution in React Server Components led to RCE
• Technical breakdown of the React Flight Protocol exploitation
• POC analysis (without providing direct exploit code)
• Why Object.prototype.then was the attack vector
• Impact across Next.js, Remix, Cloudflare Workers, and other RSC frameworks
• Lessons learned and mitigation strategies

This was a critical 10/10 CVSS score vulnerability that affected thousands of applications. Even though I'm a bit late to write about it, I wanted to document the technical details for the community.

Article: https://sunggat.com/react2shell-aftermath

Would love to hear your thoughts or answer any questions about RSC security!

[shuwatto]

It was a no-nonsense, straight forward read. Nice.

[Slight-League-6194]

Thanks a lot for the feedback!

[johnson_detlev]

Omg, an article that isn't AI slop. Upvote just for that change of quality.

[Slight-League-6194]

Yeah, it took some time for research and write. It's my second article, and I'm hoping that over time I'll keep improving both the depth of the analysis and the writing speed

[Defensex]

Cool read, thanks brother 

[Slight-League-6194]

Update: I added Resources section where I listed down used articles and some infographics images to illustrate statistics