DEBIAN-CVE-2026-4224

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2026-4224
Published: 16 Mar 2026, 18:16
Last modified:11 Jul 2026, 21:00

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Mar 2026, 18:16
Published
Vulnerability first disclosed
11 Jul 2026, 21:00
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•pypy3

    all | all | all | all

  • debian•python2.7

    all

  • debian•python3.11

    all | < 3.11.2-6+deb12u8

  • debian•python3.13

    all | all | < 3.13.5-2+deb13u2 | < 3.13.14-1

  • debian•python3.14

    all | < 3.14.3-4

  • debian•python3.9

    all | < 3.9.2-1+deb11u7

References (1)