CVE-2026-6062

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-06-22. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

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

Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT request to the subscription edit endpoint.. Mattermost Advisory ID: MMSA-2026-00650

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 22, 2026
No patch confirmed yet.
generic

Security Updates

https://mattermost.com/security-updates

Vendor Advisories for CVE-2026-6062(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 12× in last 7d / 77× 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 161 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6062?
CVE-2026-6062 is a medium vulnerability published on June 22, 2026. Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT…
When was CVE-2026-6062 disclosed?
CVE-2026-6062 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6062 actively exploited?
CVE-2026-6062 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 85.2% of all scored CVEs.
What is the CVSS score of CVE-2026-6062?
CVE-2026-6062 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-6062?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6062, 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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