Fix CVE(s): CVE-2025-13462, CVE-2026-0672, CVE-2026-3644, CVE-2026-4224
* SECURITY UPDATE: C stack overflow (DoS) in pyexpat when parsing deeply nested DTD content models - debian/patches/CVE-2026-4224.patch: guard conv_content_model() in Modules/pyexpat.c with Py_EnterRecursiveCall/Py_LeaveRecursiveCall to bound recursion when a registered ElementDeclHandler converts a deeply nested content model. - CVE-2026-4224 * SECURITY UPDATE: HTTP header injection via control characters in cookies - debian/patches/CVE-2026-0672.patch: add _has_control_character() and reject control characters in Morsel.__setitem__()/setdefault()/set() and BaseCookie.output() in Lib/http/cookies.py. - CVE-2026-0672 * SECURITY UPDATE: incomplete fix for CVE-2026-0672 (control characters in cookies via additional Morsel paths) - debian/patches/CVE-2026-3644.patch: reject control characters in Morsel.update(), Morsel.__setstate__() and Morsel.js_output() in Lib/http/cookies.py. - CVE-2026-3644 * SECURITY UPDATE: tarfile member type confusion (regular file parsed as directory) via GNU long name/link headers - debian/patches/CVE-2025-13462.patch: skip the AREGTYPE->DIRTYPE normalization while reading GNU LONGNAME/LONGLINK and PAX follow-up headers (dircheck=False) in Lib/tarfile.py. - CVE-2025-13462
- Products
- idle-python3.6, libpython3.6, libpython3.6-dev, libpython3.6-minimal, libpython3.6-stdlib, libpython3.6-testsuite, python3.6, python3.6-dev, python3.6-doc, python3.6-examples, python3.6-minimal, python3.6-venv
- Affected versions
- Not specified
- Fixed versions
- 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
- CVEs
- CVE-2025-13462, CVE-2026-0672, CVE-2026-3644, CVE-2026-4224
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:41 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2025-13462, CVE-2026-0672, CVE-2026-3644, CVE-2026-4224
core-osv · Original sourcePublished 11 Jun 2026, 10:47 UTC
* SECURITY UPDATE: C stack overflow (DoS) in pyexpat when parsing deeply nested DTD content models - debian/patches/CVE-2026-4224.patch: guard conv_content_model() in Modules/pyexpat.c with Py_EnterRecursiveCall/Py_LeaveRecursiveCall to bound recursion when a registered ElementDeclHandler converts a deeply nested content model. - CVE-2026-4224 * SECURITY UPDATE: HTTP header injection via control characters in cookies - debian/patches/CVE-2026-0672.patch: add _has_control_character() and reject control characters in Morsel.__setitem__()/setdefault()/set() and BaseCookie.output() in Lib/http/cookies.py. - CVE-2026-0672 * SECURITY UPDATE: incomplete fix for CVE-2026-0672 (control characters in cookies via additional Morsel paths) - debian/patches/CVE-2026-3644.patch: reject control characters in Morsel.update(), Morsel.__setstate__() and Morsel.js_output() in Lib/http/cookies.py. - CVE-2026-3644 * SECURITY UPDATE: tarfile member type confusion (regular file parsed as directory) via GNU long name/link headers - debian/patches/CVE-2025-13462.patch: skip the AREGTYPE->DIRTYPE normalization while reading GNU LONGNAME/LONGLINK and PAX follow-up headers (dircheck=False) in Lib/tarfile.py. - CVE-2025-13462
osv:CLSA-2026-1781174666
idle-python3.6
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
libpython3.6
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
libpython3.6-dev
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
libpython3.6-minimal
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
libpython3.6-stdlib
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
libpython3.6-testsuite
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6-dev
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6-doc
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6-examples
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6-minimal
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
python3.6-venv
Fixed versions: 3.6.9-1~18.04ubuntu1.12+tuxcare.els23
Complete source record
{
"id": "82ce75c45ed0fdc5f8bf6fa2949a11f12277d0281fe63e530561461f1e88f8ba",
"url": "https://osv.dev/vulnerability/CLSA-2026-1781174666",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2025-13462, CVE-2026-0672, CVE-2026-3644, CVE-2026-4224",
"summary": "* SECURITY UPDATE: C stack overflow (DoS) in pyexpat when parsing deeply nested DTD content models - debian/patches/CVE-2026-4224.patch: guard conv_content_model() in Modules/pyexpat.c with Py_EnterRecursiveCall/Py_LeaveRecursiveCall to bound recursion when a registered ElementDeclHandler converts a deeply nested content model. - CVE-2026-4224 * SECURITY UPDATE: HTTP header injection via control characters in cookies - debian/patches/CVE-2026-0672.patch: add _has_control_character() and reject control characters in Morsel.__setitem__()/setdefault()/set() and BaseCookie.output() in Lib/http/cookies.py. - CVE-2026-0672 * SECURITY UPDATE: incomplete fix for CVE-2026-0672 (control characters in cookies via additional Morsel paths) - debian/patches/CVE-2026-3644.patch: reject control characters in Morsel.update(), Morsel.__setstate__() and Morsel.js_output() in Lib/http/cookies.py. - CVE-2026-3644 * SECURITY UPDATE: tarfile member type confusion (regular file parsed as directory) via GNU long name/link headers - debian/patches/CVE-2025-13462.patch: skip the AREGTYPE->DIRTYPE normalization while reading GNU LONGNAME/LONGLINK and PAX follow-up headers (dircheck=False) in Lib/tarfile.py. - CVE-2025-13462",
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{
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"evidence": "/affected/8/package/name"
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"affected_versions": []
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{
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"affected_versions": []
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{
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"severity": "unknown",
"structured": {
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"aliases": [
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],
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"purl": "pkg:deb/tuxcare/idle-python3.6?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
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"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1781174666.json"
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"database_specific": {
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"database_specific": {
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"package": {
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"package": {
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},
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],
"modified": "2026-10-26T09:32:03.516182037Z",
"provider": "osv",
"upstream": [
"CVE-2025-13462",
"CVE-2026-0672",
"CVE-2026-3644",
"CVE-2026-4224"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1781174666.html",
"https://nvd.nist.gov/vuln/detail/CVE-2025-13462",
"https://nvd.nist.gov/vuln/detail/CVE-2026-0672",
"https://nvd.nist.gov/vuln/detail/CVE-2026-3644",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4224"
]
},
"related_cves": [
{
"value": "CVE-2025-13462",
"evidence": "/upstream"
},
{
"value": "CVE-2026-0672",
"evidence": "/upstream"
},
{
"value": "CVE-2026-3644",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4224",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449525,
"published_at": "2026-06-11T10:47:05+00:00"
}