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DNS Rebinding Vulnerability Bypasses Lookspan CORS Protections

By PulseAugur Editorial · [1 sources] ·

A security vulnerability known as DNS rebinding was found to bypass Cross-Origin Resource Sharing (CORS) protections on Lookspan. This attack allows a malicious domain to access local APIs by tricking the browser into treating requests as same-origin after the initial page load. The attacker points their domain to 127.0.0.1, circumventing CORS checks because the browser no longer sees the request as cross-origin. AI

IMPACT This discovery highlights potential security risks in local-first applications and APIs, relevant for developers building or securing AI-powered tools.

RANK_REASON Security vulnerability discovered in a specific service.

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

DNS Rebinding Vulnerability Bypasses Lookspan CORS Protections

COVERAGE [1]

  1. Mastodon — mastodon.social TIER_1 English(EN) · jonimartin ·

    Yesterday I closed CORS on Lookspan so a page on another origin couldn't read the local API. Today I checked whether that was enough. It wasn't. DNS rebinding w

    Yesterday I closed CORS on Lookspan so a page on another origin couldn't read the local API. Today I checked whether that was enough. It wasn't. DNS rebinding walks straight past it. The attacker points their domain at 127.0.0.1 after the page has loaded, and from that moment the…

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