How severe is CVE-2025-15549?

CVE-2025-15549 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-15549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15549?

CVE-2025-15549 affects Fluentcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15549?

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

Does CVE-2025-15549 have an EU (EUVD) identifier?

Yes. CVE-2025-15549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206518.

When was CVE-2025-15549 published?

CVE-2025-15549 was published on 2026-01-29 and last updated on 2026-06-17.

CVE-2025-15549

CVE-2025-15549 is a medium-severity vulnerability in Fluentcms with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v4: 4.8
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206518
Weakness: CWE-79
Affected product: Fluentcms
Published: 2026-01-29
Last modified: 2026-06-17

Description

FluentCMS 2026 contains a stored cross-site scripting vulnerability that allows authenticated administrators to upload SVG files with embedded JavaScript via the File Management module. Attackers can upload malicious SVG files that execute JavaScript in the browser of any user accessing the uploaded file URL.

Frequently asked questions

What is CVE-2025-15549?: FluentCMS 2026 contains a stored cross-site scripting vulnerability that allows authenticated administrators to upload SVG files with embedded JavaScript via the File Management module. Attackers can upload malicious SVG files that execute JavaScript in the browser of any user accessing the uploaded file URL.
How severe is CVE-2025-15549?: CVE-2025-15549 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-15549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15549?: CVE-2025-15549 affects Fluentcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-15549 have an EU (EUVD) identifier?: Yes. CVE-2025-15549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206518.
When was CVE-2025-15549 published?: CVE-2025-15549 was published on 2026-01-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*

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