Decidim: JWT-backed authentication can be replayed across organizations

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45414
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 22:17:06 UTC
Updated2026-08-07 18:17:15 UTC
DescriptionDecidim is a participatory democracy framework. Prior to 0.31.5 and in 0.32.0.rc1 before 0.32.0.rc2, JWT-backed API authentication is not bound to the organization selected by the current host, allowing a JWT issued for one tenant to be replayed against another tenant’s API to read participantDetails data and reach the proposal.answer mutation path. This issue is fixed in versions 0.31.5 and 0.32.0.rc2.

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS: 0.003240000 probability, percentile 0.248410000 (date 2026-08-07)

Problem Types: CWE-639 | CWE-863 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
3.1CNADECLARED8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Decidim Decidim affected < 0.31.5 Not specified
CNA Decidim Decidim affected >= 0.32.0.rc1, < 0.32.0.rc2 Not specified

References

ReferenceSourceLinkTags
github.com/decidim/decidim/commit/226dc94894e6a3c030e4638c8b3441ee7199643c [email protected] github.com
github.com/decidim/decidim/releases/tag/v0.32.0.rc2 [email protected] github.com
github.com/decidim/decidim/commit/023e206127c984a501345676e4789b31ddd115a1 [email protected] github.com
github.com/decidim/decidim/releases/tag/v0.31.5 [email protected] github.com
github.com/decidim/decidim/security/advisories/GHSA-r3v7-5x4c-c69q 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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