---
id: CVE-2026-104967
title: Plane is an open-source project management tool
summary: >-
  Plane is an open-source project management tool. Prior to 1.4.0,
  BulkDeleteIssuesEndpoint and SubIssuesEndpoint in
  apps/api/plane/app/views/issue/ accept body- or URL-supplied issue IDs and
  operate on them without checking that the IDs b…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-639
vendor: makeplane
product: plane
affected:
  - plane < 1.4.0
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T17:17:12.590'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104967'
references:
  - url: >-
      https://github.com/makeplane/plane/commit/ad73ca300ce35e4d4d231a933de6f20f8203f3df
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/pull/9270'
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/releases/tag/v1.4.0'
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/security/advisories/GHSA-6cw7-h92q-p9hg'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T17:27:45.052Z'
---

## Overview

Plane is an open-source project management tool. Prior to 1.4.0, BulkDeleteIssuesEndpoint and SubIssuesEndpoint in apps/api/plane/app/views/issue/ accept body- or URL-supplied issue IDs and operate on them without checking that the IDs belong to the caller's workspace and project. The permission decorator on each endpoint validates only that the caller is a member or administrator of the workspace and project named in the URL. BulkDeleteIssuesEndpoint can destroy CycleIssue and ModuleIssue associations belonging to foreign issues. SubIssuesEndpoint can re-parent foreign issues under an attacker-selected issue and return the foreign issues' metadata. This issue is fixed in 1.4.0.

## Remediation

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