#VU107581 Exposure of Resource to Wrong Sphere in XWiki platform - CVE-2025-32783

Vulnerability identifier: #VU107581

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-32783

CWE-ID: CWE-668

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
XWiki platform
Web applications / CMS

Vendor: XWiki

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to exposure of resource to wrong sphere within notifications from a different wiki. A remote attacker can see "public" messages from a closed wiki.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

XWiki platform: 1.3 rc-1 - 17.2.1, 2.3-milestone-1, 5.0 - 5.0.3, 5.1, 5.2 - 5.2.4, 5.3, 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/security/advisories/GHSA-42fh-pvvh-999x
https://jira.xwiki.org/browse/XWIKI-17154

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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.