CVE-2026-5300

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

April 8, 2026

Last Modified

July 24, 2026

Advisory Details (2)

Auto-updated Sep 7, 2026
No patch confirmed yet.
generic

CoolerControl v4.0.0 · CoolerControl / CoolerControl · GitLab

https://gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0
generic

coolercontrold/src/api/router.rs · 3.1.1 · CoolerControl / CoolerControl · GitLab

https://gitlab.com/coolercontrol/coolercontrol/-/blob/3.1.1/coolercontrold/src/api/router.rs?ref_type=tags

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 206 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 09:35 UTCEPSS rescore
  5. 2026-09-08 22:01 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-04 05:07 UTCEPSS rescore
  9. 2026-09-02 18:08 UTCOSV refresh
  10. 2026-09-02 14:12 UTCEPSS rescore
  11. 2026-09-01 13:54 UTCEPSS rescore
  12. 2026-09-01 04:40 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:42 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-23 00:19 UTCEPSS rescore
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 11:17 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 07:20 UTCEG score recompute
  2. 2026-08-16 07:20 UTCGHSA enrichment
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-14 22:27 UTCGHSA enrichment
  5. 2026-08-14 18:29 UTCGHSA enrichment
  6. 2026-08-14 13:11 UTCGHSA enrichment
  7. 2026-08-14 09:14 UTCGHSA enrichment
  8. 2026-08-14 05:17 UTCEG score recompute
  9. 2026-08-14 05:17 UTCGHSA enrichment
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-13 09:35 UTCGHSA enrichment
  12. 2026-08-13 03:26 UTCGHSA enrichment
  13. 2026-08-12 23:29 UTCGHSA enrichment
  14. 2026-08-12 19:32 UTCEG score recompute
  15. 2026-08-12 19:32 UTCGHSA enrichment
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-11 23:46 UTCGHSA enrichment
  18. 2026-08-11 19:47 UTCEG score recompute
  19. 2026-08-11 19:47 UTCGHSA enrichment
  20. 2026-08-11 07:05 UTCGHSA enrichment
  21. 2026-08-11 03:08 UTCEG score recompute
  22. 2026-08-11 03:08 UTCGHSA enrichment
  23. 2026-08-11 00:00 UTCEPSS rescore
  24. 2026-08-10 12:51 UTCGHSA enrichment
  25. 2026-08-10 08:36 UTCGHSA enrichment
  26. 2026-08-10 04:39 UTCGHSA enrichment
  27. 2026-08-10 00:42 UTCGHSA enrichment
  28. 2026-08-09 20:44 UTCGHSA enrichment
  29. 2026-08-09 16:47 UTCEG score recompute
  30. 2026-08-09 16:47 UTCGHSA enrichment
  31. 2026-08-09 13:46 UTCEPSS rescore
  32. 2026-08-09 12:50 UTCGHSA enrichment
  33. 2026-08-09 08:43 UTCGHSA enrichment
  34. 2026-08-09 04:46 UTCEG score recompute
  35. 2026-08-09 04:46 UTCGHSA enrichment
  36. 2026-08-08 16:37 UTCEPSS rescore
  37. 2026-08-08 11:22 UTCGHSA enrichment
  38. 2026-08-08 06:46 UTCGHSA enrichment
  39. 2026-08-08 02:49 UTCGHSA enrichment
  40. 2026-08-07 22:52 UTCGHSA enrichment
  41. 2026-08-07 18:55 UTCEG score recompute
  42. 2026-08-07 18:55 UTCGHSA enrichment
  43. 2026-08-07 14:42 UTCGHSA enrichment
  44. 2026-08-06 17:34 UTCEG score recompute
  45. 2026-08-06 17:34 UTCGHSA enrichment
  46. 2026-08-06 13:47 UTCEPSS rescore
  47. 2026-08-06 12:52 UTCGHSA enrichment
  48. 2026-08-06 07:47 UTCGHSA enrichment
  49. 2026-08-06 03:49 UTCGHSA enrichment
  50. 2026-08-05 23:52 UTCEG score recompute
  51. 2026-08-05 23:52 UTCGHSA enrichment
  52. 2026-08-05 19:17 UTCEPSS rescore
  53. 2026-08-04 15:10 UTCEPSS rescore
  54. 2026-08-04 10:39 UTCEPSS rescore
  55. 2026-08-04 02:11 UTCGHSA enrichment
  56. 2026-08-03 22:08 UTCEG score recompute
  57. 2026-08-03 22:08 UTCGHSA enrichment
  58. 2026-08-03 10:36 UTCEPSS rescore
  59. 2026-08-03 01:59 UTCGHSA enrichment
  60. 2026-08-02 22:02 UTCGHSA enrichment
  61. 2026-08-02 18:05 UTCGHSA enrichment
  62. 2026-08-02 14:07 UTCEG score recompute
  63. 2026-08-02 14:07 UTCGHSA enrichment
  64. 2026-08-02 02:27 UTCEPSS rescore
  65. 2026-08-01 04:16 UTCEPSS rescore
  66. 2026-07-30 16:28 UTCEPSS rescore
  67. 2026-07-30 01:30 UTCEPSS rescore
  68. 2026-07-30 01:30 UTCEPSS rescore
  69. 2026-07-28 15:37 UTCEPSS rescore
  70. 2026-07-27 14:14 UTCEPSS rescore
  71. 2026-07-26 14:54 UTCEPSS rescore
  72. 2026-07-26 14:54 UTCEPSS rescore
  73. 2026-07-26 08:49 UTCEG score recompute▲ 3.20
  74. 2026-07-26 08:48 UTCGHSA enrichment
  75. 2026-07-25 14:18 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-5300?
CVE-2026-5300 is a critical vulnerability published on April 8, 2026. Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests
When was CVE-2026-5300 disclosed?
CVE-2026-5300 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5300 actively exploited?
CVE-2026-5300 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.7% of all scored CVEs.
What is the CVSS score of CVE-2026-5300?
CVE-2026-5300 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-5300?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5300, 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.

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