CVE-2026-59255

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. the CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0

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

BloodHound through 9.4.0, fixed in commit 8f79035, contains a missing authorization vulnerability in the custom-nodes API endpoints that allows any authenticated user to modify the global graph schema. Attackers with valid session tokens can create, update, or delete custom node types affecting all users and tenants by invoking unprotected POST, PUT, and DELETE operations on the custom-nodes endpoints.

CVSS v3
7.1
EG Score
7.1(high)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 28, 2026

Advisory Details (4)

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

BloodHound Missing Authorization on Custom Node Management API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/bloodhound-missing-authorization-on-custom-node-management-api
github_pr

fix: enforce opengraph permissions on custom node kind endpoints - BED-8970

Fix merged in SpecterOps/BloodHound PR #2989 on 2026-07-13 — awaiting tagged release

https://github.com/SpecterOps/BloodHound/pull/2989
generic

Bug: Missing Authorization on Custom Node Kind Management API Allows Any Authenticated User to Modify Global Graph Schema · Issue #2910 · SpecterOps/BloodHound · GitHub

https://github.com/SpecterOps/BloodHound/issues/2910
github_commit

commit 8f790351349f (SpecterOps/BloodHound)

Fix landed in SpecterOps/BloodHound commit 8f790351349f — awaiting tagged release

https://github.com/SpecterOps/BloodHound/commit/8f790351349fd87bcb04377aba84cba6495825b3

Vendor Advisories for CVE-2026-59255(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 31× in last 7d / 60× 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.

  1. 2026-08-03 18:15 UTCEG score recompute
  2. 2026-08-03 18:15 UTCGHSA enrichment
  3. 2026-08-03 10:36 UTCEPSS rescore
  4. 2026-08-03 05:55 UTCGHSA enrichment
  5. 2026-08-02 17:11 UTCGHSA enrichment
  6. 2026-08-02 05:00 UTCEG score recompute
  7. 2026-08-02 05:00 UTCGHSA enrichment
  8. 2026-08-02 02:27 UTCEPSS rescore
  9. 2026-08-01 16:50 UTCGHSA enrichment
  10. 2026-08-01 04:40 UTCEG score recompute
  11. 2026-08-01 04:40 UTCGHSA enrichment
  12. 2026-08-01 04:16 UTCEPSS rescore
  13. 2026-07-31 16:30 UTCGHSA enrichment
  14. 2026-07-31 04:16 UTCEG score recompute
  15. 2026-07-31 04:15 UTCGHSA enrichment
  16. 2026-07-30 16:28 UTCEPSS rescore
  17. 2026-07-30 16:04 UTCEG score recompute
  18. 2026-07-30 16:04 UTCGHSA enrichment
  19. 2026-07-30 03:04 UTCEG score recompute
  20. 2026-07-30 03:04 UTCGHSA enrichment
  21. 2026-07-30 01:30 UTCEPSS rescore
  22. 2026-07-30 01:30 UTCEPSS rescore
  23. 2026-07-29 14:53 UTCGHSA enrichment
  24. 2026-07-29 02:42 UTCEG score recompute
  25. 2026-07-29 02:41 UTCGHSA enrichment
Show 35 more
  1. 2026-07-28 15:37 UTCEPSS rescore
  2. 2026-07-28 14:31 UTCGHSA enrichment
  3. 2026-07-28 02:20 UTCEG score recompute
  4. 2026-07-28 02:20 UTCGHSA enrichment
  5. 2026-07-28 00:24 UTCEG score recompute
  6. 2026-07-28 00:24 UTCGHSA enrichment
  7. 2026-07-27 14:14 UTCEPSS rescore
  8. 2026-07-27 11:56 UTCGHSA enrichment
  9. 2026-07-26 23:46 UTCEG score recompute
  10. 2026-07-26 23:46 UTCGHSA enrichment
  11. 2026-07-26 14:54 UTCEPSS rescore
  12. 2026-07-26 14:54 UTCEPSS rescore
  13. 2026-07-26 11:34 UTCEG score recompute
  14. 2026-07-26 11:34 UTCGHSA enrichment
  15. 2026-07-25 14:18 UTCEPSS rescore
  16. 2026-07-25 14:18 UTCEPSS rescore
  17. 2026-07-24 14:18 UTCEPSS rescore
  18. 2026-07-24 14:18 UTCEPSS rescore
  19. 2026-07-23 14:18 UTCEPSS rescore
  20. 2026-07-23 14:18 UTCEPSS rescore
  21. 2026-07-23 03:21 UTCEG score recompute
  22. 2026-07-22 14:08 UTCEPSS rescore
  23. 2026-07-22 14:08 UTCEPSS rescore
  24. 2026-07-21 15:25 UTCEPSS rescore
  25. 2026-07-21 15:25 UTCEPSS rescore
  26. 2026-07-20 17:08 UTCEPSS rescore
  27. 2026-07-19 14:31 UTCEPSS rescore
  28. 2026-07-19 02:29 UTCEPSS rescore
  29. 2026-07-18 10:04 UTCEPSS rescore
  30. 2026-07-17 05:59 UTCGHSA enrichment
  31. 2026-07-16 17:49 UTCGHSA enrichment
  32. 2026-07-16 17:03 UTCEPSS rescore
  33. 2026-07-16 05:39 UTCGHSA enrichment
  34. 2026-07-15 17:29 UTCEG score recompute
  35. 2026-07-15 17:28 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59255?
CVE-2026-59255 is a high vulnerability published on July 15, 2026. BloodHound through 9.4.0, fixed in commit 8f79035, contains a missing authorization vulnerability in the custom-nodes API endpoints that allows any authenticated user to modify the global graph schema. Attackers with valid session tokens can create, update, or delete custom node types affecting all…
When was CVE-2026-59255 disclosed?
CVE-2026-59255 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59255 actively exploited?
CVE-2026-59255 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 84.0% of all scored CVEs.
What is the CVSS score of CVE-2026-59255?
CVE-2026-59255 has a CVSS v4.0 base score of 7.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-59255?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59255, 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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