CVE-2025-65637
highA 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…
Vendor / product: Turbopuffer — logrus
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
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2025-12-04 19:16
Modified: 2026-11-04 22:10
NVD status: Analyzed
Last synced 2 hours ago
Verified against the source API 2026-11-04 22:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
turbopuffer / logrus <1.8.3, 1.9.0, 1.9.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/sirupsen/logrus/issues/1370
Patch / mitigation: https://github.com/sirupsen/logrus/pull/1376
References
- https://github.com/mjuanxd/logrus-dos-poc cve@mitre.org
- https://github.com/mjuanxd/logrus-dos-poc/blob/main/README.md cve@mitre.org
- https://github.com/sirupsen/logrus/issues/1370 cve@mitre.org
- https://github.com/sirupsen/logrus/pull/1376 cve@mitre.org
- https://github.com/sirupsen/logrus/releases/tag/v1.8.3 cve@mitre.org
- https://github.com/sirupsen/logrus/releases/tag/v1.9.1 cve@mitre.org
- https://github.com/sirupsen/logrus/releases/tag/v1.9.3 cve@mitre.org
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMSIRUPSENLOGRUS-5564391 cve@mitre.org
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 22:37 UTC · record ↗