CVE-2025-27912: Datalust Seq

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

An issue was discovered in Datalust Seq before 2024.3.13545. Missing Content-Type validation can lead to CSRF when (1) Entra ID or OpenID Connect authentication is in use and a user visits a compromised/malicious site, or (2) when username/password or Active Directory authentication is in use and a user visits a compromised/malicious site under the same effective top-level domain as the Seq server. Exploitation of the vulnerability allows the attacker to conduct impersonation attacks and perform actions in Seq on behalf of the targeted user.

Affected products

• Datalust Seq: before 2024.3.13545 (fixed in 2024.3.13545)

Published 2025-03-11. Last modified 2026-06-17.