CVE-2026-58660

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: Elevated riskExposed: 0

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

Kanboard through 1.2.52, fixed in commit 564cc30, BoardAjaxController save() method (used by the kanban board drag-and-drop endpoint) validates the caller's role on the attacker-supplied project_id but never verifies that the supplied task_id actually belongs to that project. Because task identifiers are sequential integers shared across the entire instance, any authenticated user who is a member of at least one project can enumerate and move (corrupt/hide) tasks belonging to any other project on the same instance, including private projects they have no membership or role on.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 15, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

Kanboard BoardAjaxController Missing Ownership Check via Drag-and-Drop | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kanboard-boardajaxcontroller-missing-ownership-check-via-drag-and-drop
github_pr

fix(board): verify task belongs to project before moving

Fix merged in kanboard/kanboard PR #5853 on 2026-07-14 — awaiting tagged release

https://github.com/kanboard/kanboard/pull/5853
generic

Cross-project task hijack via missing project ownership check in BoardAjaxController drag-and-drop endpoint · Issue #5852 · kanboard/kanboard · GitHub

https://github.com/kanboard/kanboard/issues/5852
github_commit

commit 564cc30e1e36 (kanboard/kanboard)

Fix landed in kanboard/kanboard commit 564cc30e1e36 — awaiting tagged release

https://github.com/kanboard/kanboard/commit/564cc30e1e360959572e01e158734d9475c05903

Vendor Advisories for CVE-2026-58660(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 22× in last 7d / 112× 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 156 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-58660?
CVE-2026-58660 is a high vulnerability published on July 15, 2026. Kanboard through 1.2.52, fixed in commit 564cc30, BoardAjaxController save() method (used by the kanban board drag-and-drop endpoint) validates the caller's role on the attacker-supplied projectid but never verifies that the supplied taskid actually belongs to that project. Because task identifiers…
When was CVE-2026-58660 disclosed?
CVE-2026-58660 was first published in the National Vulnerability Database on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58660 actively exploited?
CVE-2026-58660 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 59.1% of all scored CVEs.
What is the CVSS score of CVE-2026-58660?
CVE-2026-58660 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-58660?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58660, 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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