How severe is CVE-2025-66473?

CVE-2025-66473 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-66473 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66473?

CVE-2025-66473 affects Xwiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66473?

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

Does CVE-2025-66473 have an EU (EUVD) identifier?

Yes. CVE-2025-66473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202430.

When was CVE-2025-66473 published?

CVE-2025-66473 was published on 2025-12-10 and last updated on 2026-06-17.

CVE-2025-66473

CVE-2025-66473 is a high-severity vulnerability in Xwiki with a CVSS 3.x base score of 7.5. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202430
Weakness: CWE-770
Affected product: Xwiki
Published: 2025-12-10
Last modified: 2026-06-17

Description

XWiki is an open-source wiki software platform. Versions 16.10.10 and below, 17.0.0-rc-1 through 17.4.3 and 17.5.0-rc-1 through 17.6.0 contain a REST API which doesn't enforce any limits for the number of items that can be requested in a single request at the moment. Depending on the number of pages in the wiki and the memory configuration, this can lead to slowness and unavailability of the wiki. As an example, the /rest/wikis/xwiki/spaces resource returns all spaces on the wiki by default, which are basically all pages. This issue is fixed in versions 17.4.4 and 16.10.11.

Frequently asked questions

What is CVE-2025-66473?: XWiki is an open-source wiki software platform. Versions 16.10.10 and below, 17.0.0-rc-1 through 17.4.3 and 17.5.0-rc-1 through 17.6.0 contain a REST API which doesn't enforce any limits for the number of items that can be requested in a single request at the moment. Depending on the number of pages in the wiki and the memory configuration, this can lead to slowness and unavailability of the wiki. As an example, the /rest/wikis/xwiki/spaces resource returns all spaces on the wiki by default, which are basically all pages. This issue is fixed in versions 17.4.4 and 16.10.11.
How severe is CVE-2025-66473?: CVE-2025-66473 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-66473 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66473?: CVE-2025-66473 affects Xwiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66473?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-66473 have an EU (EUVD) identifier?: Yes. CVE-2025-66473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202430.
When was CVE-2025-66473 published?: CVE-2025-66473 was published on 2025-12-10 and last updated on 2026-06-17.

References

Affected products (1)

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

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