CVE-2026-45415Public exploitNetwork attack vectorHinoki check available

Census record corruption via missing authorization

Published Aug 6, 2026 · Updated Aug 6, 2026

Improper authorization in Decidim before 0.30.9, 0.31.0.rc1 through 0.31.4, and 0.32.0.rc1 allows remote authenticated users to alter census data. The CSV census controller renders and mutates Decidim::Verifications::CsvDatum through record-management actions without enforcing full-administrator permission. Participant-manager access is required; exploitation can create, change, or delete verification data used by authorization workflows.

CVSS severity6.0
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authorization in Decidim before 0.30.9, 0.31.0.rc1 through 0.31.4, and 0.32.0.rc1 allows remote authenticated users to alter census data. The CSV census controller renders and mutates Decidim::Verifications::CsvDatum through record-management actions without enforcing full-administrator permission. Participant-manager access is required; exploitation can create, change, or delete verification data used by authorization workflows.

The record

CVE
CVE-2026-45415
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Decidim
Product
Decidim
Classifications
T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.30.9
  2. Affected versionversion=>= 0.31.0.rc1, < 0.31.5
  3. Affected versionversion=>= 0.32.0.rc1, < 0.32.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Decidim · Decidimversion=< 0.30.9; version=>= 0.31.0.rc1, < 0.31.5; version=>= 0.32.0.rc1, < 0.32.0

Published CVSS scores

6.0GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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