CSRF in Datalust Seq
CVE-2025-27912
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Datalust Seq — versions 0
Weakness classification (CWE)
References
- datalust.co/seq (Product)
- github.com/datalust/seq-tickets/issues/2366 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-27912?
- CVE-2025-27912 is a high-severity vulnerability in Datalust Seq, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2025-03-11.
- How severe is CVE-2025-27912?
- High severity. CVSS v3 base score is 8.8 out of 10.