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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Parabol Parabol unaffected
Version Status Constraints
0 affected < 15.21.2

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ParabolInc/parabol/blob/v15.21.1/packages/server/graphql/public/mutations/addReactjiToReactable.ts#L36-L99 cve-icon
https://github.com/ParabolInc/parabol/commit/1f063b2f2768ad3a6138156ddce9d938f58e8005 cve-icon
https://github.com/ParabolInc/parabol/issues/13727 cve-icon
https://github.com/ParabolInc/parabol/releases/tag/v15.21.2 cve-icon
https://hackmd.io/@hieuPenguinnn/parabol-addreactjitoreactable-cross-meeting-idor cve-icon
https://www.vulncheck.com/advisories/parabol-before-15.21.2-missing-authorization-via-addreactjitoreactable-mutation cve-icon
History

Tue, 10 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Parabol before 15.21.2 Missing Authorization via addReactjiToReactable Mutation
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-10T15:22:45.275Z

Reserved: 2026-11-10T12:36:06.626Z

Link: CVE-2026-125748

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses