What’s Vulnerable › Vulnerabilities

CVE-2023-26478: org.xwiki.platform:xwiki-platform-store-filesystem-oldcore has Exposed Dangerous Method or Function

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-02 · updated 2026-06-17
• Weakness: CWE-749

Description

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.

Affected products

• xwiki-platform: from 14.3 before 14.4.6; from 14.5 before 14.9 — fixed in 14.4.6, 14.9

How to fix

Upgrade to a fixed version: xwiki-platform 14.4.6, 14.9. Check the vendor advisory for mitigations.

References

• https://github.com/xwiki/xwiki-platform/commit/3c73c59e39b6436b1074d8834cf276916010014d
• https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p
• https://jira.xwiki.org/browse/XWIKI-20180
• https://github.com/xwiki/xwiki-platform/commit/3c73c59e39b6436b1074d8834cf276916010014d
• https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p
• https://jira.xwiki.org/browse/XWIKI-20180

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