Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-59255
SpecterOps BloodHound — BloodHound Missing Authorization on Custom Node Management API
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N N H L 7.1 .0044 35.9 —
AFFECTED
Product Versions Fixed
BloodHound unspecified 8f790351349fd87bcb04377aba84cba6495825b3
TIMELINE
Jul 4 Reserved by VulnCheck
Jul 15 Published (CNA: VulnCheck)
Sep 17 EXPLOIT PUBLISHED — CVE-2026-59255 (SpecterOps BloodHound). Public exploit reference added.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 4, 2026 | Reserved | Reserved by VulnCheck |
| July 15, 2026 | Published | Published (CNA: VulnCheck) |
| September 17, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-59255 (SpecterOps BloodHound). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| SpecterOps | BloodHound | — | — | 8f790351349fd87bcb04377aba84cba6495825b3 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-59255 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
