UBUNTU-CVE-2026-4224
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-4224
UBUNTU-CVE-2026-4224
Published: 16 Mar 2026Last Modified: 10 Sept 2026
Upstream:
Aliases:
Summary:
Details: 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.
References: https://ubuntu.com/security/CVE-2026-4224, https://www.cve.org/CVERecord?id=CVE-2026-4224, https://mail.python.org/archives/list/[email protected]/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R/, https://github.com/python/cpython/pull/145987, https://ubuntu.com/security/notices/USN-8509-1, https://ubuntu.com/security/notices/USN-8744-1
Affected packages
Package
Name: python2.7
Purl: pkg:deb/ubuntu/python2.7?arch=source&distro=esm-infra-legacy%2Ftrusty
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -2.7.6-8ubuntu0.6+esm30
Affected versions
2.7.5-8ubuntu3
2.7.5-8ubuntu4
2.7.6-2
2.7.6-2ubuntu1
2.7.6-3
2.7.6-3ubuntu1
2.7.6-4
2.7.6-4ubuntu1
2.7.6-5
2.7.6-7
2.7.6-8
2.7.6-8ubuntu0.2
2.7.6-8ubuntu0.3
2.7.6-8ubuntu0.4
2.7.6-8ubuntu0.5
2.7.6-8ubuntu0.6+esm2
2.7.6-8ubuntu0.6+esm3
2.7.6-8ubuntu0.6+esm5
2.7.6-8ubuntu0.6+esm6
2.7.6-8ubuntu0.6+esm7
2.7.6-8ubuntu0.6+esm8
2.7.6-8ubuntu0.6+esm9
2.7.6-8ubuntu0.6+esm10
2.7.6-8ubuntu0.6+esm11
2.7.6-8ubuntu0.6+esm12
2.7.6-8ubuntu0.6+esm13
2.7.6-8ubuntu0.6+esm14
2.7.6-8ubuntu0.6+esm15
2.7.6-8ubuntu0.6+esm16
2.7.6-8ubuntu0.6+esm17
2.7.6-8ubuntu0.6+esm18
2.7.6-8ubuntu0.6+esm20
2.7.6-8ubuntu0.6+esm21
2.7.6-8ubuntu0.6+esm22
2.7.6-8ubuntu0.6+esm24
2.7.6-8ubuntu0.6+esm25
2.7.6-8ubuntu0.6+esm26
2.7.6-8ubuntu0.6+esm28
2.7.6-8ubuntu0.6+esm29
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
