---
id: CVE-2026-86347
title: >-
  Affected versions of MISP allow any authenticated user to access
  TemplatesController::uploadFile() because the ACL entry for
  templates/uploadFile used the wildcard *
summary: >-
  Affected versions of MISP allow any authenticated user to access
  TemplatesController::uploadFile() because the ACL entry for
  templates/uploadFile used the wildcard *. This bypasses the intended role
  restrictions applied to neighboring te…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-862
vendor: misp-project
product: misp
affected:
  - misp <= 2.5.45
published: '2026-09-07'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T15:26:35.550'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86347'
references:
  - url: 'https://github.com/MISP/MISP/commit/8e8885971'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
epss: 0.0043
epssPercentile: 0.34517
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T14:48:45.789622Z'
scores:
  nvd: 6.5
  cna: 7.1
ingestedAt: '2026-09-08T15:33:26.976Z'
---

## Overview

Affected versions of MISP allow any authenticated user to access TemplatesController::uploadFile() because the ACL entry for templates/uploadFile used the wildcard *. This bypasses the intended role restrictions applied to neighboring template-management operations.


The upload handler accepts arbitrary content with only minimal checks and writes it into app/tmp/files/. A low-privileged or read-only user can therefore repeatedly upload files and consume server disk space without requiring perm_add or perm_template. The fix changes the ACL requirement from * to perm_add.

The commit also rules out stronger impacts: uploaded files receive random names, path traversal/predictable overwrite is not available, the temporary directory is outside the web root, and the files are not directly served over HTTP. Therefore, the issue should not be described as arbitrary file overwrite, stored XSS, or RCE.

Version affected: ≤2.5.45

## Affected

- `misp <= 2.5.45`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.