GHSA-q79h-67vx-m9xg

Suggest an improvement
Source
https://github.com/advisories/GHSA-q79h-67vx-m9xg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-q79h-67vx-m9xg/GHSA-q79h-67vx-m9xg.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-q79h-67vx-m9xg
Aliases
Published
2026-07-13T17:17:33Z
Modified
2026-07-13T17:41:46Z
Severity
  • 6.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L CVSS Calculator
Summary
Decidim: CSV census record endpoints improper authorization
Details

Description

A participant manager can access and modify the CSV census record admin forms.

Technical description

The CSV census admin record-management surface under /admin/csv_census/census_logs does not enforce admin-only authorization before rendering or mutating Decidim::Verifications::CsvDatum.

A participant manager (which can only manage participants) can therefore open the admin forms, create or update census rows, and delete rows directly.

Reproduction steps:

  1. Sign in a participant admin and open http://localhost:3000/admin/csv_census/census_logs/new_record in the browser. Confirm the create form loads even though the session is not a full admin.
decidim-census-01 decidim-census-02

Note that normal participant accounts were not able to access the CSV census records which is good.

Impact

Any participant admin can create, alter, or remove CSV census rows, which can corrupt verification data relied on by authorization workflows.

Patches

See https://github.com/decidim/decidim/pull/16674 and https://github.com/decidim/decidim/pull/16703

Workarounds

Disable Organization Census verification method

Reference

OWASP A01:2021 Broken Access Control

Credits

This issue was discovered in a security audit organized by the Decidim Association and made by Radically Open Security against Decidim financed by NGI.

Database specific 
{
    "cwe_ids":  [
        "CWE-285"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-13T17:17:33Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}
References

Affected packages

RubyGems / decidim-verifications

Package

Name
decidim-verifications
Purl
pkg:gem/decidim-verifications

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.30.9

Affected versions

0.*
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.9.0
0.9.1
0.9.2
0.9.3
0.10.0
0.10.1
0.11.0.pre1
0.11.1
0.11.2
0.12.0.pre
0.12.0
0.12.1
0.12.2
0.13.0.pre1
0.13.0
0.13.1
0.14.1
0.14.2
0.14.3
0.14.4
0.15.0
0.15.1
0.15.2
0.16.0
0.16.1
0.17.0
0.17.1
0.17.2
0.18.0
0.18.1
0.19.0
0.19.1
0.20.0
0.20.1
0.21.0
0.22.0
0.23.0
0.23.1.rc1
0.23.1
0.23.2
0.23.3
0.23.4
0.23.5
0.23.6
0.24.0.rc1
0.24.0.rc2
0.24.0
0.24.1
0.24.2
0.24.3
0.25.0.rc1
0.25.0.rc2
0.25.0.rc3
0.25.0.rc4
0.25.0
0.25.1
0.25.2
0.26.0.rc1
0.26.0.rc2
0.26.0
0.26.1
0.26.2
0.26.3
0.26.4
0.26.5
0.26.7
0.26.8
0.26.9
0.26.10
0.27.0.rc1
0.27.0.rc2
0.27.0
0.27.1
0.27.2
0.27.3
0.27.4
0.27.5
0.27.6
0.27.7
0.27.8
0.27.9
0.27.10
0.28.0.rc4
0.28.0.rc5
0.28.0
0.28.1
0.28.2
0.28.3
0.28.4
0.28.5
0.28.6
0.29.0.rc1
0.29.0.rc2
0.29.0.rc3
0.29.0.rc4
0.29.0
0.29.1
0.29.2
0.29.3
0.29.4
0.29.5
0.29.6
0.29.7
0.30.0.rc1
0.30.0.rc2
0.30.0.rc3
0.30.0
0.30.1
0.30.2
0.30.3
0.30.4
0.30.5
0.30.6
0.30.7
0.30.8

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-q79h-67vx-m9xg/GHSA-q79h-67vx-m9xg.json"

RubyGems / decidim-verifications

Package

Name
decidim-verifications
Purl
pkg:gem/decidim-verifications

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.31.0.rc1
Fixed
0.31.5

Affected versions

0.*
0.31.0.rc1
0.31.0.rc2
0.31.0
0.31.1
0.31.2
0.31.3
0.31.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-q79h-67vx-m9xg/GHSA-q79h-67vx-m9xg.json"

RubyGems / decidim-verifications

Package

Name
decidim-verifications
Purl
pkg:gem/decidim-verifications

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.32.0.rc1
Fixed
0.32.0

Affected versions

0.*
0.32.0.rc1
0.32.0.rc2
0.32.0.rc3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-q79h-67vx-m9xg/GHSA-q79h-67vx-m9xg.json"