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CVE-2023-26478

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Date: March 2, 2023

XWiki Platform is a generic wiki platform. Starting in version 14.3-rc-1, `org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment` returns an instance of `com.xpn.xwiki.doc.XWikiAttachment`. This class is not supported to be exposed to users without the `programing` right. `com.xpn.xwiki.api.Attachment` should be used instead and takes case of checking the user's rights before performing dangerous operations. This has been patched in versions 14.9-rc-1 and 14.4.6. There are no known workarounds for this issue.

Language: Java

Severity Score

Related Resources (6)

https://github.com/xwiki/xwiki-platform/commit/3c73c59e39b6436b1074d8834cf276916010014d
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p
https://github.com/xwiki/xwiki-platform
https://nvd.nist.gov/vuln/detail/CVE-2023-26478
https://jira.xwiki.org/browse/XWIKI-20180
https://www.mend.io/vulnerability-database/CVE-2023-26478

Severity Score

Weakness Type (CWE)

Exposed Dangerous Method or Function

CWE-749

Top Fix

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Upgrade Version

Upgrade to version org.xwiki.platform:xwiki-platform-store-filesystem-oldcore:14.4.6,14.9

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

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