Resource exhaustion in Datalust Seq
CVE-2025-27911
An issue was discovered in Datalust Seq before 2024.3.13545. Expansion of identifiers in message templates can be used to bypass the system "Event body limit bytes" setting, leading to increased resource consumption. With sufficiently large events, there can be disk space exhaustion (if saved to disk) or a termination of the server process with an out-of-memory error.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Datalust Seq — versions 0
Weakness classification (CWE)
References
- datalust.co/seq (Product)
- github.com/datalust/seq-tickets/issues/2365 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-27911?
- CVE-2025-27911 is a medium-severity vulnerability in Datalust Seq, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2025-03-11.
- How severe is CVE-2025-27911?
- Medium severity. CVSS v3 base score is 6.5 out of 10.