#VU106018 Improper Authorization in XWiki platform - CVE-2025-29926

Vulnerability identifier: #VU106018

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-29926

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
XWiki platform
Web applications / CMS

Vendor: XWiki

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper authorization. A remote attacker can exploit the WikiManager REST API to create a new wiki, leading to privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

XWiki platform: 1.3 rc-1 - 16.9.0, 3.0-milestone-1, 3.2-m3, 5.4 - 5.4.7, 6.0 - 6.0.1, 6.1, 6.2-milestone-1 - 6.2.7, 6.3 rc-1, 6.4 - 6.4.8, 7.0 - 7.0.1, 7.1 - 7.1.4, 7.2, 7.3, 7.4 - 7.4.6, 8.0, 8.1, 8.2 - 8.2.2, 8.3 rc-1, 8.4 - 8.4.6, 9.0, 9.1 - 9.11.9, 9.2, 9.3 - 9.3.1, 9.4, 9.5 - 9.5.1, 9.6, 9.7, 9.8 - 9.8.1, 9.9

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External links
https://github.com/xwiki/xwiki-platform/commit/82aa670106c7f5e6238ca6ed59a52d1800e05b99
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-gfp2-6qhm-7x43
https://jira.xwiki.org/browse/XWIKI-22490

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.