How severe is CVE-2025-56236?

CVE-2025-56236 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-2025-56236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-56236?

CVE-2025-56236 affects Formcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-56236?

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

Does CVE-2025-56236 have an EU (EUVD) identifier?

Yes. CVE-2025-56236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26075.

When was CVE-2025-56236 published?

CVE-2025-56236 was published on 2025-08-28 and last updated on 2026-06-17.

CVE-2025-56236

CVE-2025-56236 is a medium-severity vulnerability in Formcms 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)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26075
Weakness: CWE-79
Affected product: Formcms
Published: 2025-08-28
Last modified: 2026-06-17

Description

FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. When a privileged user accesses the file, the script executes in their browser context.

Frequently asked questions

What is CVE-2025-56236?: FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. When a privileged user accesses the file, the script executes in their browser context.
How severe is CVE-2025-56236?: CVE-2025-56236 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-2025-56236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-56236?: CVE-2025-56236 affects Formcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-56236?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-56236 have an EU (EUVD) identifier?: Yes. CVE-2025-56236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26075.
When was CVE-2025-56236 published?: CVE-2025-56236 was published on 2025-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:formcms:formcms:*:*:*:*:*:*:*:*

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