Collected research

#317476 Account Takeover in Periscope TV

X / xAI disclosed on HackerOne: Account Takeover in Periscope TV

Ron Chan · HackerOne

Periscope's Twitter OAuth login echoed the Host header into its redirect target, so a request carrying Host set to attacker.com/www.periscope.tv sent the OAuth callback to the attacker. A victim who authorises the resulting link hands over their oauth verifier, letting the attacker finish the flow and take over the Periscope account.

Record

Document

X / xAI disclosed on HackerOne: Account Takeover in Periscope TV

Researcher

Ron Chan

Published by

HackerOne

Topic

Identity

In the archive

• Collected in the 2018 research round

Tags

• oauth
• header-injection
• open-redirect
• auth-bypass
• http
• info-leak
• bug-bounty
• owasp-a01-2021
• owasp-a03-2021
• owasp-a04-2021
• owasp-a07-2021

This page is the archive's own catalogue record. The research is the work of Ron Chan, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on 9 August 2026.