CVE-2024-45594: Decidim is a participatory democracy framework

Routine

HIGH 7.7UPGRADE

CVE-2024-45594 is a high-severity flaw (CVSS 7.7) affecting decidim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Decidim is a participatory democracy framework. The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL. This vulnerability is fixed in 0.28.3 and 0.29.0.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-11-13
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: decidim

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-13 17:15 UTCPublished CVE record published
2026-06-17 07:54 UTCUpdated Record last modified

decidim decidim UPGRADE

Affected: >= 0.28.0 and < 0.28.3

Fixed in: 0.28.3

Safe to downgrade to: a release before 0.28.0

1. Check installed version

apt-cache policy decidim || rpm -q decidim || decidim --version

2. UPGRADE to 0.28.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade decidim

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade decidim

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.28.0 (Debian / Ubuntu)

apt-cache madison decidim sudo apt install decidim=<VERSION_BEFORE_0.28.0> sudo apt-mark hold decidim

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list decidim sudo dnf downgrade decidim-<VERSION_BEFORE_0.28.0> sudo dnf versionlock add decidim

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-45594?

decidim: upgrade to 0.28.3. Exact commands for each OS are on this page.

Is CVE-2024-45594 being exploited?

CVE-2024-45594 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-45594 affect?

CVE-2024-45594 affects decidim. Severity is high (CVSS 7.7). Decidim is a participatory democracy framework. The meeting embeds feature used in the online or hybrid meetings is subject to potential XSS attack through a malformed URL. This vulnerability is fixed in 0.28.3 and 0.29.0.

How urgent is CVE-2024-45594?

Priority 32/100. High severity

Related CVEs

CVE-2026-40869 HIGH 7.5 UPGRADE Decidim is a participatory democracy framework
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CVE-2025-65017 MEDIUM 6.5 UPGRADE Decidim is a participatory democracy framework
CVE-2024-39910 MEDIUM 5.4 UPGRADE decidim is a Free Open-Source participatory democracy, citizen participation and open government for cities an
CVE-2024-32034 MEDIUM 6.8 UPGRADE decidim is a Free Open-Source participatory democracy, citizen participation and open government for cities an

References

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