Vulnerability details
CVE-2026-18639
Rapid7 Velociraptor
Velociraptor OIDC Authenticator susceptible to email spoofing
CVSS 3.1
7.3High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.3High | 3.1 | CVEProject cvelistV5 (CNA) (rapid7) | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Rapid7 | Velociraptor | v < 0.77.2 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-08-11
- Last updated
- 2026-08-11
- State
- Published
- Assigner (CNA)
- rapid7
Exploit prediction (EPSS)
0.38%
Probability of exploitation in 30 days
33%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-290Authentication bypass by spoofing