How severe is CVE-2024-28235?

CVE-2024-28235 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-28235 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-28235?

CVE-2024-28235 affects Contao. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-28235?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-28235 have an EU (EUVD) identifier?

Yes. CVE-2024-28235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1172.

When was CVE-2024-28235 published?

CVE-2024-28235 was published on 2024-04-09 and last updated on 2026-06-17.

CVE-2024-28235

CVE-2024-28235 is a high-severity vulnerability in Contao with a CVSS 3.x base score of 8.3. 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-200.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-1172
Weakness: CWE-200
Affected product: Contao
Published: 2024-04-09
Last modified: 2026-06-17

Description

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.

Frequently asked questions

What is CVE-2024-28235?: Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.
How severe is CVE-2024-28235?: CVE-2024-28235 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-28235 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-28235?: CVE-2024-28235 affects Contao. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-28235?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-28235 have an EU (EUVD) identifier?: Yes. CVE-2024-28235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1172.
When was CVE-2024-28235 published?: CVE-2024-28235 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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