Web Hack List

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XSS using quirky implementations of ACME HTTP-01

The article examines ACME HTTP-01 validation implementations that mishandled the challenge response as active web content. By controlling challenge material or validation behavior, an attacker could make certificate-validation endpoints serve script in a trusted origin and obtain cross-site scripting.

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Detectify
Published by
Labs Detectify
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This page is the archive's own catalogue record. The research is the work of Detectify, first published at the original source. Preserved copies are kept so the citation survives its host.