CVE-2025-65637

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 53% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

December 4, 2025

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Aug 8, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: github_release, github_pr.
generic🔴 Active Exploitation

Denial of Service (DoS) in github.com/sirupsen/logrus | CVE-2025-65637 | Snyk

https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMSIRUPSENLOGRUS-5564391
github_release Patch Available

v1.9.3

Patch available: sirupsen/logrus v1.9.3

https://github.com/sirupsen/logrus/releases/tag/v1.9.3
github_release Patch Available

v1.9.1

Patch available: sirupsen/logrus v1.9.1

https://github.com/sirupsen/logrus/releases/tag/v1.9.1
github_release Patch Available

v1.8.3

Patch available: sirupsen/logrus v1.8.3

https://github.com/sirupsen/logrus/releases/tag/v1.8.3
github_pr Patch Available

This commit fixes a potential denial of service vulnerability in logrus.Writer() that could be triggered by logging text longer than 64kb without newlines.

Patch available: sirupsen/logrus v1.8.3 (PR #1376 merged 2023-05-15)

https://github.com/sirupsen/logrus/pull/1376
generic

Error while reading from Writer: bufio.Scanner: token too long · Issue #1370 · sirupsen/logrus · GitHub

https://github.com/sirupsen/logrus/issues/1370
generic🟡 PoC Available

logrus-dos-poc/README.md at main · mjuanxd/logrus-dos-poc · GitHub

https://github.com/mjuanxd/logrus-dos-poc/blob/main/README.md
generic🟡 PoC Available

GitHub - mjuanxd/logrus-dos-poc: CVE-2025-65637: Logrus Denial of Service Vulnerability · GitHub

https://github.com/mjuanxd/logrus-dos-poc

Vendor Advisories for CVE-2025-65637(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-insights-rhel9-operator:17787094532026-05-20redhat
redhatopenshift4/ose-kube-proxy-rhel9:17775193692026-05-13redhat
redhatskopeo-2:1.8.0-4.1.el9_0.32026-05-11redhat
redhatoci-seccomp-bpf-hook-0:1.2.10-1.el9_02026-05-11redhat
redhatopenshift-0:4.12.0-202604271501.p2.gedc7ba9.assembly.stream.el82026-05-08redhat
redhatskopeo-2:1.11.4-0.1.el9_2.52026-05-06redhat
redhatopenshift4/ose-hyperkube:17773047522026-05-06redhat
redhatgolang-github-openstack-k8s-operators-os-diff-0:0.1.1-18.0.20260225161428.32d52e7.el9ost2026-04-29redhat
redhatoci-seccomp-bpf-hook-0:1.2.10-1.el9_22026-04-29redhat
redhatcontainer-tools:rhel8-8060020260422144418.ad008a3a2026-04-27redhat
redhatopenshift4/ovirt-csi-driver-rhel8-operator:17756140682026-04-16redhat
redhatopenshift-0:4.13.0-202603240119.p2.g7aa9360.assembly.stream.el82026-04-16redhat
redhatopenshift4/ose-cloud-event-proxy-rhel8:17756139762026-04-16redhat
redhatrunc-4:1.2.9-1.el9_02026-04-15redhat
redhatopenshift4/ose-thanos-rhel8:17742736132026-04-09redhat
redhatopenshift4/ztp-site-generate-rhel8:17755319252026-04-07redhat
redhatopenshift4/ose-cluster-kube-controller-manager-rhel9-operator:17743204802026-04-01redhat
redhatcontainer-tools:rhel8-8080020260325222945.63b345852026-03-30redhat
redhatopenshift4/ose-powervs-block-csi-driver-operator-rhel8:17733380142026-03-26redhat
redhatopenshift4/ose-cloud-event-proxy-rhel8:17733395452026-03-26redhat
redhatopenshift4/ose-docker-registry-rhel9:17727321962026-03-25redhat
redhatopenshift4/ovirt-csi-driver-rhel9-operator:17722024242026-03-19redhat
redhatopenshift4/ose-ptp-rhel9:17722015072026-03-19redhat
redhatmicroshift-0:4.16.58-202603160404.p0.gb9661ec.assembly.4.16.58.el92026-03-19redhat
redhatopenshift-0:4.15.0-202602130120.p2.g5cb2ef4.assembly.stream.el82026-03-19redhat
redhatopenshift4/ose-vsphere-csi-driver-rhel9:17721587372026-03-19redhat
redhatopenshift4/ptp-must-gather-rhel8:17725983272026-03-19redhat
redhatopenshift4/ose-openshift-apiserver-rhel9:17721487092026-03-19redhat
redhatopenshift4/ose-docker-registry-rhel9:17721675832026-03-18redhat
redhatcontainer-tools:rhel8-8080020260226135022.63b345852026-03-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
golang-logrus1.7.0-2, 1.9.0-1, 1.9.0-1+hurd.1, 1.9.3-1, 1.9.3-2——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-logrus1.9.0-1, 1.9.0-1+hurd.1, 1.9.3-1, 1.9.3-2——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-logrus1.9.0-1, 1.9.0-1+hurd.1, 1.9.3-1, 1.9.3-2——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
golang-logrus1.9.0-1, 1.9.0-1+hurd.11.9.3-1—
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/sirupsen/logrus1.9.21.9.3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(16)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 4× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 14:11 UTCEPSS rescore
  3. 2026-09-01 13:53 UTCEPSS rescore
  4. 2026-08-30 19:16 UTCEPSS rescore
  5. 2026-08-30 01:21 UTCEPSS rescore
  6. 2026-08-28 21:40 UTCEPSS rescore
  7. 2026-08-27 14:24 UTCEPSS rescore
  8. 2026-08-26 14:45 UTCEPSS rescore
  9. 2026-08-25 13:48 UTCEPSS rescore
  10. 2026-08-24 14:16 UTCEPSS rescore
  11. 2026-08-24 13:02 UTCOSV refresh
  12. 2026-08-23 00:18 UTCEPSS rescore
  13. 2026-08-21 23:48 UTCEPSS rescore
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-19 17:03 UTCEPSS rescore
  16. 2026-08-18 13:47 UTCEPSS rescore
  17. 2026-08-17 13:46 UTCEPSS rescore
  18. 2026-08-16 14:55 UTCEPSS rescore
  19. 2026-08-16 02:13 UTCEPSS rescore
  20. 2026-08-15 01:30 UTCEPSS rescore
  21. 2026-08-15 01:29 UTCEPSS rescore
  22. 2026-08-13 21:59 UTCEPSS rescore
  23. 2026-08-12 13:50 UTCEPSS rescore
  24. 2026-08-11 13:42 UTCEPSS rescore
  25. 2026-08-10 23:59 UTCEPSS rescore
Show 75 more
  1. 2026-08-09 13:46 UTCEPSS rescore
  2. 2026-08-09 13:46 UTCEPSS rescore
  3. 2026-08-08 16:36 UTCEPSS rescore
  4. 2026-08-08 08:37 UTCEG score recompute
  5. 2026-08-08 08:37 UTCVendor advisory
  6. 2026-08-07 16:26 UTCEPSS rescore
  7. 2026-08-06 13:46 UTCEPSS rescore
  8. 2026-08-05 19:17 UTCEPSS rescore
  9. 2026-08-05 19:17 UTCEPSS rescore
  10. 2026-08-04 15:09 UTCEPSS rescore
  11. 2026-08-04 10:37 UTCEPSS rescore
  12. 2026-08-03 10:35 UTCEPSS rescore
  13. 2026-08-02 02:26 UTCEPSS rescore
  14. 2026-08-01 04:15 UTCEPSS rescore
  15. 2026-07-30 16:27 UTCEPSS rescore
  16. 2026-07-30 01:30 UTCEPSS rescore
  17. 2026-07-28 15:35 UTCEPSS rescore
  18. 2026-07-27 14:12 UTCEPSS rescore
  19. 2026-07-26 14:54 UTCEPSS rescore
  20. 2026-07-26 14:54 UTCEPSS rescore
  21. 2026-07-25 14:17 UTCEPSS rescore
  22. 2026-07-24 14:17 UTCEPSS rescore
  23. 2026-07-24 14:17 UTCEPSS rescore
  24. 2026-07-23 14:18 UTCEPSS rescore
  25. 2026-07-23 14:18 UTCEPSS rescore
  26. 2026-07-23 14:11 UTCOSV refresh
  27. 2026-07-23 03:01 UTCEG score recompute
  28. 2026-07-22 14:08 UTCEPSS rescore
  29. 2026-07-21 15:24 UTCEPSS rescore
  30. 2026-07-20 17:08 UTCEPSS rescore
  31. 2026-07-19 14:30 UTCEPSS rescore
  32. 2026-07-19 14:30 UTCEPSS rescore
  33. 2026-07-19 02:28 UTCEPSS rescore
  34. 2026-07-18 10:04 UTCEPSS rescore
  35. 2026-07-18 10:04 UTCEPSS rescore
  36. 2026-07-16 17:02 UTCEPSS rescore
  37. 2026-07-15 16:57 UTCEPSS rescore
  38. 2026-07-15 16:57 UTCEPSS rescore
  39. 2026-07-15 01:59 UTCEPSS rescore
  40. 2026-07-15 01:59 UTCEPSS rescore
  41. 2026-07-13 22:29 UTCEPSS rescore
  42. 2026-07-13 06:12 UTCEPSS rescore
  43. 2026-07-12 05:46 UTCEPSS rescore
  44. 2026-07-11 08:27 UTCEPSS rescore
  45. 2026-07-09 19:09 UTCEPSS rescore
  46. 2026-07-08 15:15 UTCEPSS rescore
  47. 2026-07-07 13:46 UTCEPSS rescore
  48. 2026-07-06 16:27 UTCEPSS rescore
  49. 2026-07-06 16:27 UTCEPSS rescore
  50. 2026-07-06 08:41 UTCOSV refresh
  51. 2026-07-06 02:23 UTCEPSS rescore
  52. 2026-07-06 02:23 UTCEPSS rescore
  53. 2026-07-05 02:30 UTCEPSS rescore
  54. 2026-07-05 02:30 UTCEPSS rescore
  55. 2026-07-04 06:31 UTCEPSS rescore
  56. 2026-07-04 06:30 UTCEPSS rescore
  57. 2026-07-01 15:06 UTCEPSS rescore
  58. 2026-07-01 15:06 UTCEPSS rescore
  59. 2026-06-30 23:22 UTCEPSS rescore
  60. 2026-06-29 14:06 UTCEPSS rescore
  61. 2026-06-29 14:06 UTCEPSS rescore
  62. 2026-06-28 14:07 UTCEPSS rescore
  63. 2026-06-28 14:07 UTCEPSS rescore
  64. 2026-06-28 04:56 UTCEPSS rescore
  65. 2026-06-28 04:55 UTCEPSS rescore
  66. 2026-06-27 03:08 UTCEPSS rescore
  67. 2026-06-25 13:49 UTCEPSS rescore
  68. 2026-06-24 14:04 UTCEPSS rescore
  69. 2026-06-24 14:04 UTCEPSS rescore
  70. 2026-06-23 21:32 UTCEPSS rescore
  71. 2026-06-23 21:32 UTCEPSS rescore
  72. 2026-06-22 14:25 UTCEPSS rescore
  73. 2026-06-21 14:56 UTCEPSS rescore
  74. 2026-06-21 14:56 UTCEPSS rescore
  75. 2026-06-21 01:59 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmjuanxd/logrus-dos-poc
    First seen Nov 7, 2025

    CVE-2025-65637: Logrus Denial of Service Vulnerability

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-65637?
CVE-2025-65637 is a high vulnerability published on December 4, 2025. 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…
When was CVE-2025-65637 disclosed?
CVE-2025-65637 was first published in the National Vulnerability Database on December 4, 2025, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-65637 actively exploited?
CVE-2025-65637 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.4% of all scored CVEs.
What is the CVSS score of CVE-2025-65637?
CVE-2025-65637 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-65637?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-65637, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-65637

Explore →

Is Your Infrastructure Affected by CVE-2025-65637?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs