CVE-2026-18639: high-severity vulnerability in Rapid7 Velociraptor
Velociraptor OIDC Authenticator susceptible to email spoofing
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.3epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Affected products
Rapid7 · VelociraptorRelated CVEs — Rapid7 Velociraptor
In the same product, most dangerous first.
CVE-2025-6264MEDIUMVelociraptor priviledge escalation via UpdateConfig artifactEPSS 1.0%CVE-2023-0290MEDIUMRapid7 Velociraptor directory traversal in client ID parameter EPSS 0.8%CVE-2026-19583CRITICALVelociraptor Required Permissions bypass by using client monitoring queriesEPSS 0.6%CVE-2021-3619LOWRapid7 Velociraptor Notebooks Authenticated Persistent XSSEPSS 0.6%CVE-2025-14728MEDIUMRapid7 Velociraptor Directory Traversal VulnerabilityEPSS 0.6%CVE-2023-0242HIGHInsufficient permission check in the VQL copy() functionEPSS 0.6%