---
id: "CVE-2026-125748"
page: "https://infrastack.ai/live/CVE-2026-125748"
kind: "vulnerability"
aliases: ["CVE-2026-125748"]
title: "Parabol: GraphQL mutation lets users change reactions in other organizations"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["graphql", "multi-tenant", "other", "parabol", "self-hosted"]
not_affected_if: ["single-organization", "version-15.21.2-or-later"]
published_at: "2026-11-10T16:17:20+00:00"
first_seen_at: "2026-11-10T16:22:34+00:00"
updated_at: "2026-11-10T16:23:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125748", "first_seen_at": "2026-11-10T16:22:34+00:00"}]
exploit_sources: []
---

# Parabol: GraphQL mutation lets users change reactions in other organizations

Link for people: https://infrastack.ai/live/CVE-2026-125748 (this .md is for agents)

Parabol before 15.21.2 has a missing authorization check in the addReactjiToReactable GraphQL mutation. A logged-in user can pair their own meetingId with another organization's reactable ID and add or remove reactions on that content.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Parabol version you run; versions before `15.21.2` are affected.

## Fix

- Parabol: upgrade to `15.21.2` or later

## Timeline

- 2026-11-10T16:22:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125748

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/parabol-before-15.21.2-missing-authorization-via-addreactjitoreactable-mutation
- [fix] Patch: github.com https://github.com/ParabolInc/parabol/commit/1f063b2f2768ad3a6138156ddce9d938f58e8005
- [fix] Release notes: github.com https://github.com/ParabolInc/parabol/releases/tag/v15.21.2

## From the sources

Parabol before 15.21.2 contains a missing authorization vulnerability in the addReactjiToReactable GraphQL mutation that allows authenticated users to tamper with reactions on other organizations' content. Attackers can pair their own meetingId with a reactableId of another tenant's reflection, comment, or sequential team prompt response to add or remove their reactions.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_