CVE Explorer

CVE-2026-40869

Decidim is a participatory democracy framework. Starting in version 0.19.0 and prior to versions 0.30.5 and 0.31.1, a vulnerability allows any registered and authenticated user to accept or reject any amendments. The impact is on any users who have created proposals where the amendments feature is enabled. This also elevates the user accepting the amendment as the author of the original proposal as people amending proposals are provided coauthorship on the coauthorable resources. Versions 0.30.5

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:989abef7ac3bcd74a1ce3c4d0939272275c9276e34d3cdc63eae4366004aae70

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"decidim","vendor":"decidim","versions":[{"status":"affected","version":">= 0.31.0.rc1, < 0.31.1"},{"status":"affected","version":">= 0.19.0, < 0.30.5"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:e6bce16edf03365ffa4fea26207b24d0c54b08e1cdaf62cbf9cf45bf9d1d8cdd · sha256:e557d6e57bf8acad… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:e6bce16edf03365ffa4fea26207b24d0c54b08e1cdaf62cbf9cf45bf9d1d8cdd · sha256:e557d6e57bf8acad… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-266","description":"CWE-266: Incorrect Privilege Assignment","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:e6bce16edf03365ffa4fea26207b24d0c54b08e1cdaf62cbf9cf45bf9d1d8cdd · sha256:e557d6e57bf8acad… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/decidim/decidim/commit/1b99136a1c7aa02616a0b54a6ab88d12907a57a9","tags":["x_refsource_MISC"],"url":"https://github.com/decidim/decidim/commit/1b99136a1c7aa02616a0b54a6ab88d12907a57a9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:e6bce16edf03365ffa4fea26207b24d0c54b08e1cdaf62cbf9cf45bf9d1d8cdd · sha256:e557d6e57bf8acad… · /containers/cna/references/1

{"name":"https://github.com/decidim/decidim/security/advisories/GHSA-w5xj-99cg-rccm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/decidim/decidim/security/advisories/GHSA-w5xj-99cg-rccm"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:e6bce16edf03365ffa4fea26207b24d0c54b08e1cdaf62cbf9cf45bf9d1d8cdd · sha256:e557d6e57bf8acad… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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