GHSA-8959-rfxh-r4j4

### Impact

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.

### Patches
This vulnerability has been patched in XWiki 14.10.18, 15.5.3 and 15.8 RC1.

### Workarounds

The workaround is to download [commons-compress 1.24](https://search.maven.org/remotecontent?filepath=org/apache/commons/commons-compress/1.24.0/commons-compress-1.24.0.jar) and replace the one located in XWiki `WEB-INF/lib/` folder.

### References

https://jira.xwiki.org/browse/XCOMMONS-2796

### For more information

If you have any questions or comments about this advisory:
* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)
* Email us at [Security Mailing List](mailto:[email protected])