CVE-2026-45378Public exploitNetwork attack vector

Identity-document disclosure via signed-link replay

Published Aug 6, 2026 · Updated Aug 6, 2026

Information disclosure in Decidim allows remote attackers to read scanned identity documents through reusable signed storage links. The verification admin UI renders Decidim::Authorization verification_attachment blobs with variant_url, exposing authorization-free Active Storage disk URLs. Identity-document verification must be enabled, and possession of an exposed URL grants access until its seven-day signature expires.

CVSS severity7.5
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Decidim allows remote attackers to read scanned identity documents through reusable signed storage links. The verification admin UI renders Decidim::Authorization verification_attachment blobs with variant_url, exposing authorization-free Active Storage disk URLs. Identity-document verification must be enabled, and possession of an exposed URL grants access until its seven-day signature expires.

The record

CVE
CVE-2026-45378
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Decidim
Product
Decidim
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

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

7.5DecidimCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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