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TI-2026-33168 Aliases CVE-2026-45377GHSA-767h-63j4-5226

Decidim: Private exports can be downloaded through reusable links

Priority MEDIUM 62CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-284.

Summary

Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, the normal download_your_data flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without authentication by anyone who obtains it. This is because Decidim::DownloadYourDataController#download_file authenticates the export owner but redirects to a signed Active Storage blob URL that is no longer bound to the owner session. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00453 39th percentileScored 2026-11-07
Fix Fixed decidim (decidim): 0.30.9, 0.31.5, 0.32.0decidim-core (RubyGems): 0.30.9, 0.31.5, 0.32.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
decidimdecidimbefore 0.30.9; 0.31.0.rc1 to before 0.31.5; 0.32.0.rc1 to before 0.32.00.30.9, 0.31.5, 0.32.0Patch availableCNA
—decidim-core (RubyGems)before 0.30.90.30.9Patch availableGHSA-767h-63j4-5226
—decidim-core (RubyGems)0.31.0.rc1 to before 0.31.50.31.5Patch availableGHSA-767h-63j4-5226
—decidim-core (RubyGems)0.32.0.rc1 to before 0.32.00.32.0Patch availableGHSA-767h-63j4-5226
  • decidim Vendordecidim Affected before 0.30.9; 0.31.0.rc1 to before 0.31.5; 0.32.0.rc1 to before 0.32.0 Fixed in 0.30.9, 0.31.5, 0.32.0 Patch available CNA
  • decidim-core (RubyGems) Vendor— Affected before 0.30.9 Fixed in 0.30.9 Patch available GHSA-767h-63j4-5226
  • decidim-core (RubyGems) Vendor— Affected 0.31.0.rc1 to before 0.31.5 Fixed in 0.31.5 Patch available GHSA-767h-63j4-5226
  • decidim-core (RubyGems) Vendor— Affected 0.32.0.rc1 to before 0.32.0 Fixed in 0.32.0 Patch available GHSA-767h-63j4-5226

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:decidim:decidim:*:*:*:*:*:*:*:*——decidim
  • cpe:2.3:a:decidim:decidim:*:*:*:*:*:*:*:* Versions — — ·decidim

Remediation

  • Fix · CNA decidim (decidim) Fixed in 0.30.9, 0.31.5, 0.32.0
  • Fix · GHSA-767h-63j4-5226 decidim-core (RubyGems) Fixed in 0.30.9 Advisory →
  • Fix · GHSA-767h-63j4-5226 decidim-core (RubyGems) Fixed in 0.31.5 Advisory →
  • Fix · GHSA-767h-63j4-5226 decidim-core (RubyGems) Fixed in 0.32.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45377
  2. 2026-10-03 Alias added: GHSA-767h-63j4-5226

References

Other 3

  • TI-2026-33169 Decidim: Verification documents can be downloaded through reusable links CVSS 3.1HIGH 7.5
  • TI-2025-40203 Decidim's private data exports can lead to data leaks CVSS 4.0HIGH 8.2
  • TI-2026-33203 Decidim: JWT-backed authentication can be replayed across organizations CVSS 3.1HIGH 8.5
  • TI-2026-33204 Decidim: CSV census record endpoints improper authorization CVSS 3.1MEDIUM 6.0
  • TI-2026-33167 Decidim: Admin user search allows SQL injection through similarity-based sorting CVSS 3.1MEDIUM 5.5
  • TI-2026-32933 Decidim: Forms admin question editor lacks authorization CVSS 3.1MEDIUM 5.4
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences