8.6

CVSS Score

4.0

-

CVSS Score

Basic Information

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CVE-2025-49585

CVE-2025-49585: XWiki does not require right warnings for XClass definitions

Impact

When an attacker without script or programming right creates an XClass definition in XWiki (requires edit right), and that same document is later edited by a user with script, admin, or programming right, malicious code could be executed with the rights of the editing user without prior warning. In particular, this concerns custom display code, the script of computed properties and queries in database list properties. Note that warnings before editing documents with dangerous properties have only been introduced in XWiki 15.9, before that version, this was a known issue and the advice was simply to be careful.

Patches

This has been patched in XWiki 16.10.2, 16.4.7 and 15.10.16 by adding an analysis for the respective XClass properties.

Workarounds

We're not aware of any real workarounds apart from just being careful with editing documents previously edited by untrusted users as a user with script, admin or programming right.

(GitHub Advisory)

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CVE-2025-49585

CVE-2025-49585:

8.6

CVSS Score

4.0

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.xwiki.platform:xwiki-platform-security-requiredrights-default	maven	< 15.10.16	15.10.16
org.xwiki.platform:xwiki-platform-security-requiredrights-default	maven	>= 16.0.0-rc-1, < 16.4.7	16.4.7
org.xwiki.platform:xwiki-platform-security-requiredrights-default	maven	>= 16.5.0-rc-1, < 16.10.2	16.10.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability (CVE-2025-49585) in XWiki allows for privilege escalation due to insufficient rights validation for XClass definitions. Attackers with edit rights, but lacking script/programming rights, could create XClass properties containing malicious code (in custom displays, computed field scripts, or DB list queries). When a user with script, admin, or programming rights subsequently edits the document containing these XClasses, the embedded malicious code would execute with the editor's higher privileges. This was possible because XWiki did not previously analyze these specific XClass property contents for dangerous code requiring special rights.

The patch (commit 385bde985cdb61ebf315d30c0b144b6d2e2c2d45) rectifies this by introducing several new analyzer classes (PropertyClassRequiredRightAnalyzer, ComputedFieldClassRequiredRightAnalyzer, DBListClassRequiredRightAnalyzer, etc.) specifically designed to inspect the content retrieved by methods like getCustomDisplay(), getScript(), and getSql() from PropertyClass, ComputedFieldClass, and DBListClass respectively. These getter methods are identified as 'vulnerable' in the context of this CVE because they are the entry points for the malicious, unvalidated input into the system. During exploitation, these methods would supply the harmful data that is then processed by XWiki's rendering, scripting, or query execution mechanisms under the privileged user's context. The patch ensures that this data is now analyzed before such processing occurs, thus mitigating the risk.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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8.6

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2025-49585: XWiki does not require right warnings for XClass definitions

Impact

Patches

Workarounds

CVE-2025-49585:

8.6

-

Basic Information

Basic Information

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Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Vulnerability IntelligenceMiggo AI

Unlock WAF rules for this CVE

WAF Protection Rules

WAF Rule

Reasoning

8.6

8.6

CVE-2025-49585: XWiki does not require right warnings for XClass definitions

Impact

Patches

Workarounds

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Technical Details

Basic Information

Basic Information

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI