Vulnerability Details CVE-2025-24018
YesWiki is a wiki system written in PHP. In versions up to and including 4.4.5, it is possible for an authenticated user with rights to edit/create a page or comment to trigger a stored XSS which will be reflected on any page where the resource is loaded. The vulnerability makes use of the content edition feature and more specifically of the `{{attach}}` component allowing users to attach files/medias to a page. When a file is attached using the `{{attach}}` component, if the resource contained in the `file` attribute doesn't exist, then the server will generate a file upload button containing the filename. This vulnerability allows any malicious authenticated user that has the right to create a comment or edit a page to be able to steal accounts and therefore modify pages, comments, permissions, extract user data (emails), thus impacting the integrity, availability and confidentiality of a YesWiki instance. Version 4.5.0 contains a patch for the issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.5%
CVSS Severity
CVSS v3 Score 7.6
Products affected by CVE-2025-24018
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cpe:2.3:a:yeswiki:yeswiki:-
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cpe:2.3:a:yeswiki:yeswiki:4.1.0
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cpe:2.3:a:yeswiki:yeswiki:4.1.1
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cpe:2.3:a:yeswiki:yeswiki:4.1.2
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cpe:2.3:a:yeswiki:yeswiki:4.1.3
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cpe:2.3:a:yeswiki:yeswiki:4.1.4
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cpe:2.3:a:yeswiki:yeswiki:4.1.5
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cpe:2.3:a:yeswiki:yeswiki:4.2.0
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cpe:2.3:a:yeswiki:yeswiki:4.2.1
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cpe:2.3:a:yeswiki:yeswiki:4.2.2
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cpe:2.3:a:yeswiki:yeswiki:4.2.3
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cpe:2.3:a:yeswiki:yeswiki:4.2.4
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cpe:2.3:a:yeswiki:yeswiki:4.3.0
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cpe:2.3:a:yeswiki:yeswiki:4.3.1
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cpe:2.3:a:yeswiki:yeswiki:4.4.0
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cpe:2.3:a:yeswiki:yeswiki:4.4.1
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cpe:2.3:a:yeswiki:yeswiki:4.4.2
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cpe:2.3:a:yeswiki:yeswiki:4.4.3
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cpe:2.3:a:yeswiki:yeswiki:4.4.4
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cpe:2.3:a:yeswiki:yeswiki:4.4.5