How severe is CVE-2024-55488?

CVE-2024-55488 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-55488 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-55488?

CVE-2024-55488 affects Umbraco Umbraco Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-55488?

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

Does CVE-2024-55488 have an EU (EUVD) identifier?

Yes. CVE-2024-55488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-52775.

When was CVE-2024-55488 published?

CVE-2024-55488 was published on 2025-01-22 and last updated on 2026-07-05.

CVE-2024-55488

CVE-2024-55488 is a medium-severity vulnerability in Umbraco Umbraco Cms with a CVSS 3.x base score of 6.5. 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 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-52775
Weakness: CWE-79
Affected product: Umbraco Umbraco Cms
Published: 2025-01-22
Last modified: 2026-07-05

Description

A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload. NOTE: This has been disputed by the vendor since this potential attack is only possible via authenticated users who have been manually allowed access to the CMS. There was a deliberate decision made not to apply HTML sanitization at the product level.

Frequently asked questions

What is CVE-2024-55488?: A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload. NOTE: This has been disputed by the vendor since this potential attack is only possible via authenticated users who have been manually allowed access to the CMS. There was a deliberate decision made not to apply HTML sanitization at the product level.
How severe is CVE-2024-55488?: CVE-2024-55488 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-55488 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-55488?: CVE-2024-55488 affects Umbraco Umbraco Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-55488?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-55488 have an EU (EUVD) identifier?: Yes. CVE-2024-55488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-52775.
When was CVE-2024-55488 published?: CVE-2024-55488 was published on 2025-01-22 and last updated on 2026-07-05.

References

EU advisories (EUVD)

http://umbraco.com

Affected products (1)

cpe:2.3:a:umbraco:umbraco_cms:14.3.1:*:*:*:*:*:*:*

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