CVEvulnerability
CVE-2025-65637
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-12-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400
Description
A denial-of-service vulnerability exists in github.com/sirupsen/logrus when using Entry.Writer() to log a single-line payload larger than 64KB without newline characters. Due to limitations in the internal bufio.Scanner, the read fails with "token too long" and the writer pipe is closed, leaving Writer() unusable and causing application unavailability (DoS). This affects versions < 1.8.3, 1.9.0, and 1.9.2. The issue is fixed in 1.8.3, 1.9.1, and 1.9.3+, where the input is chunked and the writer continues to function even if an error is logged.
Affected configurations
• turbopuffer logrus (< 1.8.3)
• turbopuffer logrus 1.9.0
• turbopuffer logrus 1.9.2
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://github.com/mjuanxd/logrus-dos-poc Exploit, Third Party Advisory
- https://github.com/mjuanxd/logrus-dos-poc/blob/main/README.md Exploit, Third Party Advisory
- https://github.com/sirupsen/logrus/issues/1370 Exploit, Issue Tracking, Patch
- https://github.com/sirupsen/logrus/pull/1376 Issue Tracking, Patch
- https://github.com/sirupsen/logrus/releases/tag/v1.8.3 Release Notes
- https://github.com/sirupsen/logrus/releases/tag/v1.9.1 Release Notes
- https://github.com/sirupsen/logrus/releases/tag/v1.9.3 Release Notes
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMSIRUPSENLOGRUS-5564391 Exploit, Third Party Advisory