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CVE

CVE-2025-66473

XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis
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CVE

CVE-2025-66473

XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis

Impact

XWiki's REST API 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.

Patches

XWiki 17.7.0RC1, 17.4.4 and 16.10.11 introduce a configurable limit, limiting responses to 1000 items by default. Requesting larger limits leads to an error now.

Workarounds

We're not aware of any workaround, except denying access to the affected REST resources in a proxy in front of XWiki.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.7
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-cc84-q3v3-mhgf, https://nvd.nist.gov/vuln/detail/CVE-2025-66473, https://github.com/xwiki/xwiki-platform/commit/e3c47745195fb445b054537be86f5c01ee69558b, https://github.com/xwiki/xwiki-platform, https://jira.xwiki.org/browse/XWIKI-23355

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.0005%
EPSS Percentile
0.15639%
Introduced Version
0,17.0.0-rc-1,17.5.0-rc-1
Fix Available
16.10.11,17.4.4,17.7.0-rc-1

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