CVE-2026-4224

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-4224
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-4224.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-4224
Aliases
Downstream
ALPINE (1)
AZL (1)
BELL (1)
CGA (12)
CLSA (2)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (5)
OESA (4)
openSUSE (7)
RHSA (9)
RLSA (5)
ROOT (3)
SUSE (15)
UBUNTU (1)
Related
ALSA (5)
openSUSE (7)
SUSE (15)
Published
2026-03-16T17:52:26Z
Modified
2026-10-01T03:47:42Z
Severity
  • 6.0 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Stack overflow parsing XML with deeply nested DTD content models
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.

Database specific 
{
    "cna_assigner": "PSF",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4224.json"
}
References

Affected packages

Git / github.com/python/cpython

Affected ranges

Type
GIT
Repo
https://github.com/python/cpython
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b494f5935c92951e75597bfe1c8b1f3112fec270
Introduced
60403a5409ff2c3f3b07dd2ca91a7a3e096839c7
Fixed
01104ce1beb3135c2e0c01ec835b994c1f55a1c0
Introduced
ebf955df7a89ed0c7968f79faec1de49f61ed7cb
Fixed
23116f998f6789d8c2fbe5ed5b8146854c8c2a4f
Fixed
196edfb06a7458377d4d0f4b3cd41724c1f3bd4a
Fixed
24ce88b285f56ee11626cf5e472af3cd8cc7c621
Fixed
642865ddf4b232da1f3b1f7abcfa3254c4bfe785
Fixed
af856a7177326ac25d9f66cc6dd28b554d914fee
Fixed
e0a8a6da90597a924b300debe045cdb4628ee1f3
Fixed
eb0e8be3a7e11b87d198a2c3af1ed0eccf532768
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.10.0"
        },
        {
            "introduced": "3.13.0"
        },
        {
            "fixed": "3.13.13"
        },
        {
            "introduced": "3.14.0"
        },
        {
            "fixed": "3.14.4"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.9.8
v0.9.9
v1.*
v1.0.1
v1.0.2
v1.1
v1.1.1
v1.2
v1.2b1
v1.2b2
v1.2b3
v1.2b4
v1.3
v1.3b1
v1.4
v1.4b1
v1.4b2
v1.4b3
v1.5
v1.5.1
v1.5.2
v1.5.2a1
v1.5.2a2
v1.5.2b1
v1.5.2b2
v1.5.2c1
v1.5a1
v1.5a2
v1.5a3
v1.5a4
v1.5b1
v1.5b2
v1.6a1
v1.6a2
v2.*
v2.0
v2.0b1
v2.0b2
v2.0c1
v2.1
v2.1a1
v2.1a2
v2.1b1
v2.1b2
v2.1c1
v2.1c2
v2.2a3
v2.3c1
v2.3c2
v2.4
v2.4a1
v2.4a2
v2.4a3
v2.4b1
v2.4b2
v2.4c1
v3.*
v3.0a1
v3.0a2
v3.0a3
v3.0a4
v3.0a5
v3.0b1
v3.0b2
v3.0b3
v3.0rc1
v3.0rc2
v3.0rc3
v3.1
v3.10.0a1
v3.10.0a7
v3.10.0b1
v3.10.0b2
v3.10.0b3
v3.10.0b4
v3.10.0rc1
v3.10.0rc2
v3.10.1
v3.10.10
v3.10.11
v3.10.12
v3.10.13
v3.10.14
v3.10.15
v3.10.16
v3.10.17
v3.10.18
v3.10.19
v3.10.2
v3.10.20
v3.10.3
v3.10.4
v3.10.5
v3.10.6
v3.10.7
v3.10.8
v3.10.9
v3.11.0a3
v3.11.0a4
v3.11.0a5
v3.11.0a6
v3.11.0a7
v3.11.0b1
v3.11.0b2
v3.11.0b3
v3.11.0b4
v3.11.0b5
v3.11.0rc1
v3.11.0rc2
v3.11.1
v3.11.10
v3.11.11
v3.11.12
v3.11.13
v3.11.14
v3.11.15
v3.11.2
v3.11.3
v3.11.4
v3.11.5
v3.11.6
v3.11.7
v3.11.8
v3.11.9
v3.12.0
v3.12.0a1
v3.12.0a2
v3.12.0a3
v3.12.0a4
v3.12.0a5
v3.12.0a6
v3.12.0a7
v3.12.0b1
v3.12.0b2
v3.12.0b3
v3.12.0b4
v3.12.0rc1
v3.12.0rc2
v3.12.0rc3
v3.12.1
v3.12.10
v3.12.11
v3.12.12
v3.12.13
v3.12.2
v3.12.3
v3.12.4
v3.12.5
v3.12.6
v3.12.7
v3.12.8
v3.12.9
v3.13.0
v3.13.0a1
v3.13.0a2
v3.13.0a3
v3.13.0a4
v3.13.0a5
v3.13.0a6
v3.13.0b1
v3.13.1
v3.13.10
v3.13.11
v3.13.12
v3.13.2
v3.13.3
v3.13.4
v3.13.5
v3.13.6
v3.13.7
v3.13.8
v3.14.0
v3.14.0a1
v3.14.0a2
v3.14.0a3
v3.14.0a4
v3.14.0a5
v3.14.0a6
v3.14.0a7
v3.14.0b1
v3.14.1
v3.14.2
v3.14.3
v3.15.0a1
v3.15.0a2
v3.15.0a3
v3.15.0a4
v3.15.0a5
v3.15.0a6
v3.15.0a7
v3.1a1
v3.1a2
v3.1b1
v3.1rc1
v3.1rc2
v3.2a1
v3.2a2
v3.2a3
v3.2a4
v3.2b1
v3.2b2
v3.2rc1
v3.2rc2
v3.2rc3
v3.3.0a2
v3.3.0a3
v3.3.0a4
v3.3.0b1
v3.3.0b2
v3.3.0rc1
v3.3.0rc2
v3.3.0rc3
v3.4.0a1
v3.4.0a2
v3.4.0a3
v3.4.0a4
v3.4.0b1
v3.4.0b2
v3.4.0b3
v3.5.0a1
v3.5.0a2
v3.5.0a3
v3.5.0a4
v3.5.0b1
v3.6.0a3
v3.6.0b1
v3.7.0a2
v3.9.0a2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-4224.json"