CVE-2024-21651 XWiki Denial of Service attack through attachments
An attacker can cause a denial of service via CPU exhaustion by uploading a malformed TAR file to XWiki.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-21651?
CVE-2024-21651 is a high-severity denial of service vulnerability in Xwiki Xwiki, published on 8 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. A user able to attach a file to a page can post a malformed TAR file by manipulating file modification times headers, which when parsed by Tika, could cause a denial of service issue via CPU consumption. This vulnerability has been patched in XWiki 14.10.18, 15.5.3 and 15.8 RC1.
Weakness: CWE-400
Which versions are affected by CVE-2024-21651?
6 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-distribution-war. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 14.10 | 14.10.18 |
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 14.10 | 14.10.18 |
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 15.0-rc-1 | 15.5.3 |
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 15.0-rc-1 | 15.5.3 |
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 15.6-rc-1 | 15.8-rc-1 |
org.xwiki.platform:xwiki-platform-distribution-war Maven | From 15.6-rc-1 | 15.8-rc-1 |
Products include Xwiki Xwiki.
How do I fix CVE-2024-21651?
Upgrade org.xwiki.platform:xwiki-platform-distribution-war to a fixed version for your release line: 14.10.18, 15.5.3 or 15.8-rc-1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-21651 being exploited?
There is no known exploitation of CVE-2024-21651 in the wild and no public exploit code.
Other vulnerabilities in Xwiki Xwiki
- CVE-2025-24893 XWiki Platform Eval Injection
- CVE-2025-53836 XWiki Rendering is vulnerable to RCE attacks when processing nested macros
- CVE-2024-55662 XWiki allows remote code execution through the extension sheet
- CVE-2024-55877 XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList
- CVE-2024-37901 XWiki Platform vulnerable to remote code execution from account via SearchSuggestConfigSheet
Sources
Also known as GHSA-8959-rfxh-r4j4.