Bug 2448181 (CVE-2026-4224) - CVE-2026-4224 cpython: Stack overflow parsing XML with deeply nested DTD content models
Summary: CVE-2026-4224 cpython: Stack overflow parsing XML with deeply nested DTD cont...
Keywords:
Status: NEW
Alias: CVE-2026-4224
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2448203 2448209 2448210 2448201 2448202 2448204 2448205 2448206 2448207 2448208
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-16 19:02 UTC by OSIDB Bzimport
Modified: 2026-05-19 17:59 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:10950 0 None None None 2026-04-27 14:54:33 UTC
Red Hat Product Errata RHSA-2026:19019 0 None None None 2026-05-19 13:02:32 UTC
Red Hat Product Errata RHSA-2026:19064 0 None None None 2026-05-19 13:07:36 UTC
Red Hat Product Errata RHSA-2026:19176 0 None None None 2026-05-19 17:59:08 UTC
Red Hat Product Errata RHSA-2026:19177 0 None None None 2026-05-19 17:59:31 UTC

Description OSIDB Bzimport 2026-03-16 19:02:18 UTC 
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.
Comment 5 errata-xmlrpc 2026-04-27 14:54:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10950 https://access.redhat.com/errata/RHSA-2026:10950
Comment 6 errata-xmlrpc 2026-05-19 13:02:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19019 https://access.redhat.com/errata/RHSA-2026:19019
Comment 7 errata-xmlrpc 2026-05-19 13:07:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19064 https://access.redhat.com/errata/RHSA-2026:19064
Comment 8 errata-xmlrpc 2026-05-19 17:59:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19176 https://access.redhat.com/errata/RHSA-2026:19176
Comment 9 errata-xmlrpc 2026-05-19 17:59:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19177 https://access.redhat.com/errata/RHSA-2026:19177
Note You need to log in before you can comment on or make changes to this bug.