CVE-2024-37898: XWiki Platform vulnerable to document deletion and overwrite from edit

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-31 · updated 2026-06-17
Weakness: CWE-862

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When a user has view but not edit right on a page in XWiki, that user can delete the page and replace it by a page with new content without having delete right. The previous version of the page is moved into the recycle bin and can be restored from there by an admin. As the user is recorded as deleter, the user would in theory also be able to view the deleted content, but this is not directly possible as rights of the previous version are transferred to the new page and thus the user still doesn't have view right on the page. It therefore doesn't seem to be possible to exploit this to gain any rights. This has been patched in XWiki 14.10.21, 15.5.5 and 15.10.6 by cancelling save operations by users when a new document shall be saved despite the document's existing already.

Affected products

xwiki-platform: from 13.10.4 before 14.0; from 14.2 before 14.10.21; from 15.0 (excl.) before 15.5.5; from 15.6 before 15.10.6; 15.0 — fixed in 14.0, 14.10.21, 15.10.6, 15.5.5

How to fix

Upgrade to a fixed version: xwiki-platform 14.0, 14.10.21, 15.10.6, 15.5.5. Check the vendor advisory for mitigations.

References

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