---
id: CVE-2026-104956
title: Plane is an open-source project management tool
summary: >-
  Plane is an open-source project management tool. Prior to 1.4.0, the
  unauthenticated public issues endpoint accepts group_by and sub_group_by query
  parameters and passes them without an allowlist to grouped paginators, where
  they are use…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-943
vendor: makeplane
product: plane
affected:
  - plane < 1.4.0
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T17:17:11.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104956'
references:
  - url: >-
      https://github.com/makeplane/plane/commit/d3d3de44cf13991025783c598d8b34229fb47729
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/pull/9347'
    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-wwgj-929g-42cm'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T17:27:45.049Z'
---

## Overview

Plane is an open-source project management tool. Prior to 1.4.0, the unauthenticated public issues endpoint accepts group_by and sub_group_by query parameters and passes them without an allowlist to grouped paginators, where they are used as ORM field names by F(field), .values(field), .order_by(field), and Window partition_by operations. An anonymous attacker can supply arbitrary field paths that trigger an unhandled FieldError or KeyError and an HTTP 500 response, or force the ORM to resolve __-separated relational paths as a blind traversal oracle. This is the same field-name injection class addressed by earlier order_by sanitization, but that remediation left group_by and sub_group_by unvalidated. The issue does not directly disclose column values because issue_group_values() returns an empty list for unknown fields, the result projection uses a fixed required_fields list, and the subgrouped path raises KeyError before serialization. This issue is fixed in 1.4.0.

## Remediation

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