When an Expat parser with a registered ElementDeclHandler parses an inline
document type definition containing a deeply nested content model a C stack
overflow occurs.

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Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 17 Mar 2026 00:30:00 +0000

Type Values Removed Values Added
References

Tue, 17 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-805
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Mon, 16 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-674
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 16 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Description When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.
Title Stack overflow parsing XML with deeply nested DTD content models
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: PSF

Published:

Updated: 2026-03-16T23:08:21.692Z

Reserved: 2026-03-15T18:10:54.886Z

Link: CVE-2026-4224

cve-icon Vulnrichment

Updated: 2026-03-16T23:08:21.692Z

cve-icon NVD

Status : Received

Published: 2026-03-16T18:16:10.070

Modified: 2026-03-17T00:16:19.127

Link: CVE-2026-4224

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-16T17:52:26Z

Links: CVE-2026-4224 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses