CVE-2025-27911

Name: CVE-2025-27911
Creator: NVD / NIST
Published: 2025-03-11T08:15:11.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2025-27911 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.39%

31.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Datalust	Seq	< 2024.3.13545

References

https://datalust.co/seqProduct
https://github.com/datalust/seq-tickets/issues/2365Issue Tracking, Vendor Advisory

Timeline

Published: Mar 11, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-27911?

How severe is CVE-2025-27911?

CVE-2025-27911 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2025-27911?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-27911?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST