How severe is CVE-2024-39910?

CVE-2024-39910 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-39910 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39910?

CVE-2024-39910 affects Decidim. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-39910?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-39910 have an EU (EUVD) identifier?

Yes. CVE-2024-39910 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2881.

When was CVE-2024-39910 published?

CVE-2024-39910 was published on 2024-09-16 and last updated on 2026-06-17.

CVE-2024-39910

CVE-2024-39910 is a medium-severity vulnerability in Decidim with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2881
Weakness: CWE-79
Affected product: Decidim
Published: 2024-09-16
Last modified: 2026-06-17

Description

decidim is a Free Open-Source participatory democracy, citizen participation and open government for cities and organizations. The WYSWYG editor QuillJS is subject to potential XSS attach in case the attacker manages to modify the HTML before being uploaded to the server. The attacker is able to change e.g. to <svg onload=alert('XSS')> if they know how to craft these requests themselves. This issue has been addressed in release version 0.27.7. All users are advised to upgrade. Users unable to upgrade should review the user accounts that have access to the admin panel (i.e. general Administrators, and participatory space's Administrators) and remove access to them if they don't need it. Disable the "Enable rich text editor for participants" setting in the admin dashboard

Frequently asked questions

What is CVE-2024-39910?: decidim is a Free Open-Source participatory democracy, citizen participation and open government for cities and organizations. The WYSWYG editor QuillJS is subject to potential XSS attach in case the attacker manages to modify the HTML before being uploaded to the server. The attacker is able to change e.g. to <svg onload=alert('XSS')> if they know how to craft these requests themselves. This issue has been addressed in release version 0.27.7. All users are advised to upgrade. Users unable to upgrade should review the user accounts that have access to the admin panel (i.e. general Administrators, and participatory space's Administrators) and remove access to them if they don't need it. Disable the "Enable rich text editor for participants" setting in the admin dashboard
How severe is CVE-2024-39910?: CVE-2024-39910 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-39910 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39910?: CVE-2024-39910 affects Decidim. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-39910?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-39910 have an EU (EUVD) identifier?: Yes. CVE-2024-39910 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2881.
When was CVE-2024-39910 published?: CVE-2024-39910 was published on 2024-09-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:decidim:decidim:*:*:*:*:*:ruby:*:*

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