How severe is CVE-2018-17056?

CVE-2018-17056 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-17056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17056?

CVE-2018-17056 affects Progress Sitefinity Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17056?

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

When was CVE-2018-17056 published?

CVE-2018-17056 was published on 2018-09-28 and last updated on 2026-06-17.

CVE-2018-17056

CVE-2018-17056 is a medium-severity vulnerability in Progress Sitefinity Cms with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Progress Sitefinity Cms
Published: 2018-09-28
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in ServiceStack in Progress Sitefinity CMS versions 10.2 through 11.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2018-17056?: Cross-site scripting (XSS) vulnerability in ServiceStack in Progress Sitefinity CMS versions 10.2 through 11.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2018-17056?: CVE-2018-17056 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-17056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17056?: CVE-2018-17056 affects Progress Sitefinity Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-17056 published?: CVE-2018-17056 was published on 2018-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:progress:sitefinity_cms:*:*:*:*:*:*:*:*

More vulnerabilities in Progress Sitefinity Cms

CVE-2017-18639 — Medium (CVSS 6.1): Progress Sitefinity CMS before 10.1 allows XSS via /Pages Parameter : Page Title, /Content/News Parameter : News Title,…
CVE-2018-17054 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in Identity Server in Progress Sitefinity CMS versions 10.0 through 11.0…
CVE-2018-17053 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in Identity Server in Progress Sitefinity CMS versions 10.0 through 11.0…
CVE-2017-9140 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in Telerik.ReportViewer.WebForms.dll in Telerik Reporting for ASP.NET WebForms…

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