How severe is CVE-2025-54540?

CVE-2025-54540 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-2025-54540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-54540?

CVE-2025-54540 affects Opensolution Quick.cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-54540?

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

Does CVE-2025-54540 have an EU (EUVD) identifier?

Yes. CVE-2025-54540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26069.

When was CVE-2025-54540 published?

CVE-2025-54540 was published on 2025-08-28 and last updated on 2026-06-17.

CVE-2025-54540

CVE-2025-54540 is a medium-severity vulnerability in Opensolution Quick.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 v4: 5.1
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26069
Weakness: CWE-79
Affected product: Opensolution Quick.cms
Published: 2025-08-28
Last modified: 2026-06-17

Description

QuickCMS is vulnerable to Reflected XSS via sSort parameter in admin's panel functionality. A malicious attacker can craft a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.8 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Frequently asked questions

What is CVE-2025-54540?: QuickCMS is vulnerable to Reflected XSS via sSort parameter in admin's panel functionality. A malicious attacker can craft a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.8 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
How severe is CVE-2025-54540?: CVE-2025-54540 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-2025-54540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-54540?: CVE-2025-54540 affects Opensolution Quick.cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-54540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-54540 have an EU (EUVD) identifier?: Yes. CVE-2025-54540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26069.
When was CVE-2025-54540 published?: CVE-2025-54540 was published on 2025-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opensolution:quick.cms:6.8:*:*:*:*:*:*:*

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