9.9

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-37914

CVE-2023-37914: XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message

Impact

Any user who can view Invitation.WebHome can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps:

Open the invitation application (Invitation.WebHome).
Set the subject to {{cache}}{{groovy}}new File("/tmp/exploit.txt").withWriter { out -> out.println("Attacked from invitation!"); }{{/groovy}}{{/cache}}
Click "Preview"

Patches

The vulnerability has been patched on XWiki 14.4.8, 15.2-rc-1, and 14.10.6.

Workarounds

The vulnerability can be patched manually by applying the patch on Invitation.InvitationCommon and Invitation.InvitationConfig.

References

https://jira.xwiki.org/browse/XWIKI-20421
https://github.com/xwiki/xwiki-platform/commit/ff1d8a1790c6ee534c6a4478360a06efeb2d3591

For more information

If you have any questions or comments about this advisory:

Open an issue in Jira XWiki.org
Email us at Security Mailing List

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-37914

CVE-2023-37914:

9.9

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.xwiki.platform:xwiki-platform-invitation-ui	maven	>= 2.5-m-1, < 14.4.8	14.4.8
org.xwiki.platform:xwiki-platform-invitation-ui	maven	>= 14.5, < 14.10.6	14.10.6
org.xwiki.platform:xwiki-platform-invitation-ui	maven	>= 15.0-rc-1, < 15.2-rc-1	15.2-rc-1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The core vulnerability stems from improper escaping in Velocity macros handling invitation subject lines. The patch adds 'wiki="false"' to disable wiki syntax parsing within these macros, which previously allowed attackers to inject {{groovy}} macros. Both InvitationCommon.xml and InvitationConfig.xml contained the vulnerable Velocity template definition that processed user-controlled input without proper context isolation, leading to code evaluation. The test cases added in the commit verify that macro syntax in subjectLine parameters is now properly escaped, confirming the attack vector.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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