How severe is CVE-2025-66026?

CVE-2025-66026 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-2025-66026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66026?

CVE-2025-66026 affects Redaxo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66026?

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

Does CVE-2025-66026 have an EU (EUVD) identifier?

Yes. CVE-2025-66026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199662.

When was CVE-2025-66026 published?

CVE-2025-66026 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-66026

CVE-2025-66026 is a medium-severity vulnerability in Redaxo 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% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199662
Weakness: CWE-79
Affected product: Redaxo
Published: 2025-11-26
Last modified: 2026-06-17

Description

REDAXO is a PHP-based CMS. Prior to version 5.20.1, a reflected Cross-Site Scripting (XSS) vulnerability exists in the Mediapool view where the request parameter args[types] is rendered into an info banner without HTML-escaping. This allows arbitrary JavaScript execution in the backend context when an authenticated user visits a crafted link while logged in. This issue has been patched in version 5.20.1.

Frequently asked questions

What is CVE-2025-66026?: REDAXO is a PHP-based CMS. Prior to version 5.20.1, a reflected Cross-Site Scripting (XSS) vulnerability exists in the Mediapool view where the request parameter args[types] is rendered into an info banner without HTML-escaping. This allows arbitrary JavaScript execution in the backend context when an authenticated user visits a crafted link while logged in. This issue has been patched in version 5.20.1.
How severe is CVE-2025-66026?: CVE-2025-66026 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-2025-66026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66026?: CVE-2025-66026 affects Redaxo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66026 have an EU (EUVD) identifier?: Yes. CVE-2025-66026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199662.
When was CVE-2025-66026 published?: CVE-2025-66026 was published on 2025-11-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redaxo:redaxo:*:*:*:*:*:*:*:*

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