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OpenAdvisories
High · 7.3 CVE-2026-18639 EUVD-2026-56187GHSA-7v2v-mhwj-r9rw

Velociraptor OIDC Authenticator susceptible to email spoofing

Published Aug 11, 2026 · Updated Aug 11, 2026 · Assigned by rapid7

Description

When Velociraptor is configured to use an OIDC IdP for authentication, it uses the email claim as a username. However, some IdP allow users to change the email claim without verification. Some IdPs do not set the "email_verified" claim and do not actually verify the email.

This allows a user to impersonate another user by setting their email address within the IdP, allowing account takeover.

Affected products

VendorProductAffectedFixed
Rapid7 Velociraptor < 0.77.2 0.77.2

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Tumbleweed velociraptor 0.76.7.0.git145.b60ef1146-1.1 openSUSE-SU-2026:12070-1

Advisories 2

References