CVE-2026-15227

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 89% 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: epss, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

July 31, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
No patch confirmed yet.
generic

Werk #20003: Fix unauthorized users can edit foreign reports

https://checkmk.com/werk/20003

Vendor Advisories for CVE-2026-15227(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 70× 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 118 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15227?
CVE-2026-15227 is a medium vulnerability published on July 31, 2026. Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.
When was CVE-2026-15227 disclosed?
CVE-2026-15227 was first published in the National Vulnerability Database on July 31, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15227 actively exploited?
CVE-2026-15227 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 89.1% of all scored CVEs.
What is the CVSS score of CVE-2026-15227?
CVE-2026-15227 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-15227?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15227, 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

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