How severe is CVE-2026-45415?

CVE-2026-45415 has a CVSS score of 6/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-45415?

CVE-2026-45415 affects the following packages: decidim-verifications (RubyGems), decidim-verifications (RubyGems), decidim-verifications (RubyGems). Ecosystems affected: RubyGems.

How do I fix CVE-2026-45415?

Update decidim-verifications to 0.30.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-45415 is resolved across your whole dependency graph.

How do I detect CVE-2026-45415 in my RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for decidim-verifications, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-45415 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is CVE-2026-45415 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-45415 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-45415?

CVE-2026-45415 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 36th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-45415?

CVE-2026-45415 is classified as CWE-862 (CWE-862). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-45415 published, and has it been updated?

CVE-2026-45415 was published on August 6, 2026 and was last updated on October 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎

💎 RubyGems

Not in CISA KEV

MEDIUM severity

CVE-2026-45415 — decidim-verifications

MEDIUMFix: decidim/decidim#16674

CVE-2026-45415 is a medium-severity (CVSS 6) CWE-862 vulnerability in decidim-verifications. A fix is available for decidim-verifications — see the affected versions and patch details below.

Decidim: CSV census record endpoints improper authorization

Also known asGHSA-q79h-67vx-m9xg

Published

Aug 6, 2026

Updated

Oct 21, 2026

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-45415.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs36th percentile — riskier than 36% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-45415 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

3 pkgs affected

💎decidim-verifications💎decidim-verifications💎decidim-verifications

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

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:

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.

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.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`decidim-verifications`	all versions	0.30.9`bundle update decidim-verifications --conservative`
💎RubyGems	`decidim-verifications`	≥ 0.31.0.rc1&&< 0.31.5	0.31.5`bundle update decidim-verifications --conservative`
💎RubyGems	`decidim-verifications`	≥ 0.32.0.rc1&&< 0.32.0	0.32.0`bundle update decidim-verifications --conservative`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for decidim-verifications, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update decidim-verifications to 0.30.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-45415 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

## 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 br