---
id: CVE-2026-109431
title: Camunda Missing Authorization in Task Sub-Resources
summary: >-
  Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains a missing
  authorization check vulnerability in engine-rest task sub-resources that
  allows authenticated attackers with no permission grants to access task
  comments and atta…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-862
  - CWE-639
vendor: Camunda
product: Camunda 7
affected:
  - 7 >= 7.24.0 < 7.24.14
  - 7 >= 7.23.0 < 7.23.17
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-19T17:41:31.091455Z'
exploitAvailable: true
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T17:41:49.520Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109431'
references:
  - url: >-
      https://codeant.ai/security-research/camunda-task-attachment-authorization-cve-2026-109431
    label: CodeAnt AI Blog
  - url: 'https://docs.camunda.org/enterprise/download/'
    label: Camunda Download Page
  - url: >-
      https://www.vulncheck.com/advisories/camunda-missing-authorization-in-task-sub-resources
    label: 'VulnCheck Advisory: Camunda Missing Authorization in Task Sub-Resources'
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-19T15:31:18.958Z'
---

## Overview

Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains a missing authorization check vulnerability in engine-rest task sub-resources that allows authenticated attackers with no permission grants to access task comments and attachments by calling singular read and delete endpoints that lack the authorization-filtered checks enforced on their corresponding list endpoints. Attackers can exploit TaskAttachmentResourceImpl and TaskCommentResourceImpl methods such as getAttachment, getAttachmentData, deleteAttachment, and getComment using only a known object ID to read, download, or permanently delete task attachments and comments.

## Affected

- `7 >= 7.24.0 < 7.24.14`
- `7 >= 7.23.0 < 7.23.17`

## Remediation

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