CVE-2026-125748

EUVD-2026-121230
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/ParabolInc/parabol/blob/v15.21.1/packages/server/graphql/public/mutations/addReactjiToReactable.ts#L36-L99
https://github.com/ParabolInc/parabol/commit/1f063b2f2768ad3a6138156ddce9d938f58e8005
https://github.com/ParabolInc/parabol/issues/13727
https://github.com/ParabolInc/parabol/releases/tag/v15.21.2
https://hackmd.io/@hieuPenguinnn/parabol-addreactjitoreactable-cross-meeting-idor
https://www.vulncheck.com/advisories/parabol-before-15.21.2-missing-authorization-via-addreactjitoreactable-mutation