CVE-2026-45414

Decidim: JWT-backed authentication can be replayed across organizations

HIGH
8.5
CVSS Score
Published: August 6, 2026 at 07:17 PM UTC
Updated: September 8, 2026 at 09:09 PM UTC
1 product affected across 1 vendorDecidim

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Severity
HIGH8.5
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

Decidim 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.31.5v < 0.32.0.rc2
Affected range stops below 0.31.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.32.0.rc2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639CWE-863

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