CVE-2023-26478

2023-03-0218:15:10

CWE-749

[email protected]

web.nvd.nist.gov

xwiki platform

version 14.3-rc-1

temporaryattachmentsscriptservice

uploadtemporaryattachment

com.xpn.xwiki.doc.xwikiattachment

com.xpn.xwiki.api.attachment

versions 14.9-rc-1

14.4.6

unauthorized users

dangerous operations

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

7.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.5%

JSON

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.