XWiki <14.9rc1: XWikiAttachment Leak in TemporaryAttachmentsScriptService
CVE-2023-26478 Published on March 2, 2023
org.xwiki.platform:xwiki-platform-store-filesystem-oldcore has Exposed Dangerous Method or Function
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.
Vulnerability Analysis
CVE-2023-26478 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
Exposed Dangerous Method or Function
The software provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.
Products Associated with CVE-2023-26478
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Affected Versions
xwiki-platform:- Version >= 14.3-rc-1, < 14.4.6 is affected.
- Version >= 14.5, < 14.9-rc-1 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2023-26478
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| maven | org.xwiki.platform:xwiki-platform-store-filesystem-oldcore | >= 14.3-rc-1, < 14.4.6 | 14.4.6 |
| maven | org.xwiki.platform:xwiki-platform-store-filesystem-oldcore | >= 14.5, < 14.9-rc-1 | 14.9-rc-1 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.