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💎 RubyGems
Not in CISA KEV
HIGH severity

decidim-meetings Cross-site scripting vulnerability in the online or hybrid meeting embedsGHSA-j4h6-gcj7-7v9v

HIGH

GHSA-j4h6-gcj7-7v9v is a high-severity (CVSS 7.7) Cross-site Scripting (XSS) vulnerability in decidim-meetings. A fix is available for decidim-meetings — see the affected versions and patch details below.

Also known asCVE-2024-45594
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-j4h6-gcj7-7v9v.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs18th percentile — riskier than 18% of all scored CVEsHighest risk
0.00%0.26%0.52%0.79%0.3%0.3%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
💎decidim-meetings

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

Impact

The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL.

Patches

Not available

Workarounds

Disable the creation of meetings by participants in the meeting component.

References

OWASP ASVS v4.0.3-5.1.3

Credits

This issue was discovered in a security audit organized by mitgestalten Partizipationsbüro against Decidim. The security audit was implemented by the Austrian Institute of Technology.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemsdecidim-meetings≥ 0.28.0&&< 0.28.30.28.3bundle update decidim-meetings --conservative

Affected Products

1 product · 1 configurations
Application
decidimdecidim
≥ 0.28.0 && < 0.28.3
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update decidim-meetings to 0.28.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j4h6-gcj7-7v9v is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### Impact The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL. ### Patches Not available ### Workarounds Disable the creation of meetings by participants in the meeting component. ### References OWASP ASVS v4.0.3-5.1.3 ### Credits This issue was discovered in a security audit organized by mitgestalten Partizipationsbüro against Decidim. The security audit was implemented by the Austrian Institute of Technology.
O3 Security · Impact-Aware SCA

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decidim-meetings Cross-site scripting vulnerability in the…