CVE-2026-48612
Received Received - Intake
OAuth State Verification Bypass Leading to Account Linking

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: HackerOne

Description
Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.
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Meta Information
Published
2026-06-12
Last Modified
2026-06-12
Generated
2026-06-12
AI Q&A
2026-06-12
EPSS Evaluated
N/A
NVD
CVE-2026-48612
EUVD
EUVD-2026-36380
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
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Executive Summary

This vulnerability involves improper state verification in the OAuth implementation. An attacker can exploit this flaw to manipulate the authentication flow, causing a victim's account to be linked to an attacker-controlled account.

As a result, unauthorized account linking can occur, which may lead to potential account takeover.

Impact Analysis

The vulnerability can lead to unauthorized linking of your account to an attacker-controlled account.

This unauthorized linking can result in an attacker gaining control over your account, potentially leading to account takeover.

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