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CVE-2026-108039 Details

Description

By default, StaxUtils placed no limit on the total number of elements or the total number of characters in an XML document. A very large request could therefore use a lot of memory and CPU during parsing, especially where CXF builds a DOM from the input (for example SAAJ or WS-Security), and could cause a denial of service when no request size limit was configured. Both limits now have defaults: the maximum element count is 100 × maxChildElements (5,000,000 by default), and the maximum document size is 256M characters. Applications that process larger documents can raise the limits with the org.apache.cxf.stax.maxElementCount and org.apache.cxf.stax.maxXMLCharacters properties. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/10/09/14	CVE	Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/ms2gbpof609o0v1bjlzb1rn7fwh61l1j	[email protected]	Issue TrackingVendor AdvisoryMailing List

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-776	Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')	CISA-ADP

Affected Products

Product	Versions
apache cxf	< 3.6.13 >= 4.0.0, < 4.1.9 >= 4.2.0, < 4.2.4
CPE cpe:2.3:a:apache:cxf:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Oct 16, 2026	Initial Analysis	[email protected]
Oct 15, 2026	CVE Modified	CISA-ADP
Oct 9, 2026	CVE Modified	CVE
Oct 9, 2026	New CVE Received	[email protected]