CVE-2026-81817

Status: DeferredHigh (7.2)—

Affected versions of Flowintel contain an insecure direct object reference / broken object-level authorization issue across numerous task endpoints.

The routes generally received both a case identifier and a task identifier, but previously they did not enforce that the task actually belonged to the supplied case. As a result, an authenticated user with editor-level access to one case could potentially substitute the ID of a task from another case and invoke operations against that foreign task.

The patch introduces task_case_bound_required, which loads both objects and returns 404 unless the task belongs to the requested case.

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This protection is applied to edit, delete, note, assignment, status, file, export, MISP-linking, subtask, external-reference, and other task-related endpoints.

The fix also adds explicit checks that a requested note_id belongs to the current task before returning or exporting it, closing related cross-object access paths.

Version impacted =>3.3.0

CVSS

Version: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Base score: 7.2

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.35%
Percentile among all scored CVEs: 26
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement85 %
Primary impactT1005 Data from Local Systemcollection75 %
Secondary impactT1565.002 Transmitted Data Manipulationimpact70 %

Acceso autenticado en red (PR:L, AV:N) a endpoints remotos sin validar autorización de objetos (IDOR/broken access control). Permite lectura de datos de otros casos y modificación de tareas ajenas (VI:H, VA:L).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Encrypt Sensitive Information Disable or Remove Feature or Program

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Flowintel — Flowintel^AI

CWEs

CWE-639

References

https://github.com/flowintel/flowintel/commit/10676eec7f1286d7ee0769546c772c5cb9c1c72b.patch

Raw JSON (NVD)

Show

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      "value": "Affected versions of Flowintel contain an insecure direct object reference / broken object-level authorization issue across numerous task endpoints.\n\n\nThe routes generally received both a case identifier and a task identifier, but previously they did not enforce that the task actually belonged to the supplied case. As a result, an authenticated user with editor-level access to one case could potentially substitute the ID of a task from another case and invoke operations against that foreign task.\n\n\nThe patch introduces task_case_bound_required, which loads both objects and returns 404 unless the task belongs to the requested case. This protection is applied to edit, delete, note, assignment, status, file, export, MISP-linking, subtask, external-reference, and other task-related endpoints.\n\nThe fix also adds explicit checks that a requested note_id belongs to the current task before returning or exporting it, closing related cross-object access paths.\n\nVersion impacted =>3.3.0"
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  "lastModified": "2026-08-28T15:28:32.763",
  "sourceIdentifier": "5a6e4751-2f3f-4070-9419-94fb35b644e8"
}