---
id: CVE-2026-111667
title: >-
  REBUILD through 4.5.0 Missing Authorization via /project/comments/list
  Endpoint
summary: >-
  REBUILD through 4.5.0 contains a missing authorization vulnerability in
  TaskCommentController.commentList that allows authenticated low-privileged
  users to read task comments without project membership checks. Attackers can
  supply the id…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: getrebuild
product: rebuild
affected:
  - rebuild <= 4.5.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T18:25:03.254459Z'
exploitAvailable: true
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:25:28.071Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111667'
references:
  - url: >-
      https://hackmd.io/@hieuPenguinnn/getrebuild-rebuild-project-task-comment-idor
  - url: >-
      https://github.com/getrebuild/rebuild/blob/4.5.0/src/main/java/com/rebuild/web/project/TaskCommentController.java#L37-L62
  - url: >-
      https://www.vulncheck.com/advisories/rebuild-through-4.5.0-missing-authorization-via-project-comments-list-endpoint
    label: >-
      VulnCheck Advisory: REBUILD through 4.5.0 Missing Authorization via
      /project/comments/list Endpoint
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-16T18:43:08.623Z'
---

## Overview

REBUILD through 4.5.0 contains a missing authorization vulnerability in TaskCommentController.commentList that allows authenticated low-privileged users to read task comments without project membership checks. Attackers can supply the id of a task in a private project to the /project/comments/list endpoint to retrieve its comment content and attachment references.

## Affected

- `rebuild <= 4.5.0`

## Remediation

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