How severe is CVE-2024-28234?

CVE-2024-28234 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-28234 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-28234?

CVE-2024-28234 affects Contao. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-28234?

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

Does CVE-2024-28234 have an EU (EUVD) identifier?

Yes. CVE-2024-28234 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1227.

When was CVE-2024-28234 published?

CVE-2024-28234 was published on 2024-04-09 and last updated on 2026-06-17.

CVE-2024-28234

CVE-2024-28234 is a medium-severity vulnerability in Contao with a CVSS 3.x base score of 4.3. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-1227
Weakness: CWE-74
Affected product: Contao
Published: 2024-04-09
Last modified: 2026-06-17

Description

Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.

Frequently asked questions

What is CVE-2024-28234?: Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.
How severe is CVE-2024-28234?: CVE-2024-28234 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-28234 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-28234?: CVE-2024-28234 affects Contao. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-28234?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-28234 have an EU (EUVD) identifier?: Yes. CVE-2024-28234 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1227.
When was CVE-2024-28234 published?: CVE-2024-28234 was published on 2024-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*

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