How severe is CVE-2025-66024?

CVE-2025-66024 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66024 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66024?

CVE-2025-66024 affects Xwiki Blog Application. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66024?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-66024 have an EU (EUVD) identifier?

Yes. CVE-2025-66024 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208293.

When was CVE-2025-66024 published?

CVE-2025-66024 was published on 2026-03-04 and last updated on 2026-06-17.

CVE-2025-66024

CVE-2025-66024 is a critical-severity vulnerability in Xwiki Blog Application with a CVSS 3.x base score of 9.0. 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: Critical (CVSS 3.x base score 9.0)
CVSS v4: 8.6
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208293
Weakness: CWE-79
Affected product: Xwiki Blog Application
Published: 2026-03-04
Last modified: 2026-06-17

Description

The XWiki blog application allows users of the XWiki platform to create and manage blog posts. Versions prior to 9.15.7 are vulnerable to Stored Cross-Site Scripting (XSS) via the Blog Post Title. The vulnerability arises because the post title is injected directly into the HTML <title> tag without proper escaping. An attacker with permissions to create or edit blog posts can inject malicious JavaScript into the title field. This script will execute in the browser of any user (including administrators) who views the blog post. This leads to potential session hijacking or privilege escalation. The vulnerability has been patched in the blog application version 9.15.7 by adding missing escaping. No known workarounds are available.

Frequently asked questions

What is CVE-2025-66024?: The XWiki blog application allows users of the XWiki platform to create and manage blog posts. Versions prior to 9.15.7 are vulnerable to Stored Cross-Site Scripting (XSS) via the Blog Post Title. The vulnerability arises because the post title is injected directly into the HTML <title> tag without proper escaping. An attacker with permissions to create or edit blog posts can inject malicious JavaScript into the title field. This script will execute in the browser of any user (including administrators) who views the blog post. This leads to potential session hijacking or privilege escalation. The vulnerability has been patched in the blog application version 9.15.7 by adding missing escaping. No known workarounds are available.
How severe is CVE-2025-66024?: CVE-2025-66024 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66024 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66024?: CVE-2025-66024 affects Xwiki Blog Application. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66024?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-66024 have an EU (EUVD) identifier?: Yes. CVE-2025-66024 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208293.
When was CVE-2025-66024 published?: CVE-2025-66024 was published on 2026-03-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xwiki:blog_application:*:*:*:*:*:*:*:*

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