---
id: CVE-2026-63401
title: >-
  Coop has cross-org IDOR in addAccessibleQueuesForUser /
  removeAccessibleQueuesForUser
summary: >-
  Coop is an open source review and moderation tool from ROOST. Prior to 1.0.2,
  `addAccessibleQueuesForUser` and `removeAccessibleQueuesForUser` accepted
  arbitrary `queueId` and `userId` values without organization scoping. An
  authenticate…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: roostorg
product: coop
affected:
  - coop < 1.0.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-02T14:48:56.177801Z'
published: '2026-10-30'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T14:49:10.279Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-63401'
references:
  - url: 'https://github.com/roostorg/coop/security/advisories/GHSA-mf74-gf5j-hxr9'
    label: 'https://github.com/roostorg/coop/security/advisories/GHSA-mf74-gf5j-hxr9'
  - url: 'https://github.com/roostorg/coop/pull/872'
    label: 'https://github.com/roostorg/coop/pull/872'
  - url: >-
      https://github.com/roostorg/coop/commit/bd8fc6cc51de2d8f187ea63a8a7bebb8c4417088
    label: >-
      https://github.com/roostorg/coop/commit/bd8fc6cc51de2d8f187ea63a8a7bebb8c4417088
  - url: 'https://github.com/roostorg/coop/releases/tag/1.0.2'
    label: 'https://github.com/roostorg/coop/releases/tag/1.0.2'
tags:
  - cve.org
epss: 0.00269
epssPercentile: 0.19141
ingestedAt: '2026-11-05T19:30:42.672Z'
---

## Overview

Coop is an open source review and moderation tool from ROOST. Prior to 1.0.2, `addAccessibleQueuesForUser` and `removeAccessibleQueuesForUser` accepted arbitrary `queueId` and `userId` values without organization scoping. An authenticated user belonging to one organization and holding MRT queue-edit permission could grant or revoke another organization's users' access to manual review queues. The existing queue-edit permission check did not bind the supplied identifiers to the caller's organization. The attacker could not read the other organization's queues or jobs, so this issue did not disclose confidential data. This issue is fixed in version 1.0.2.

## Affected

- `coop < 1.0.2`

## Remediation

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