UnratedFix available
python3: Fix of 12 CVEs
Type: advisorySources: OSV
- CVE-2026-0672: reject control characters in http.cookies.Morsel fields and values - CVE-2026-3644: complete CVE-2026-0672 fix: reject control chars in Morsel.update(), |=, unpickling and js_output() - CVE-2026-4224: avoid unbound C recursion in pyexpat conv_content_model to prevent C stack overflow - CVE-2025-13462: skip TarInfo AREGTYPE->DIRTYPE normalization on GNU longname/longlink follow-up headers in tarfile
- Products
- python3, python3-debug, python3-devel, python3-idle, python3-libs, python3-test, python3-tkinter
- Affected versions
- Not specified
- Fixed versions
- 3.6.8-21.0.5.el7_9.tuxcare.els12
- 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, 11:46 UTC · Revision 1
Source evidence
- CVE-2026-0672: reject control characters in http.cookies.Morsel fields and values - CVE-2026-3644: complete CVE-2026-0672 fix: reject control chars in Morsel.update(), |=, unpickling and js_output() - CVE-2026-4224: avoid unbound C recursion in pyexpat conv_content_model to prevent C stack overflow - CVE-2025-13462: skip TarInfo AREGTYPE->DIRTYPE normalization on GNU longname/longlink follow-up headers in tarfile
osv:CLSA-2026-1781527577
python3
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-debug
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-devel
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-idle
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-libs
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-test
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
python3-tkinter
Fixed versions: 3.6.8-21.0.5.el7_9.tuxcare.els12
Complete source record
{
"id": "79e64c657c9d2fa45fe608286fcfb0cf183dca64252ecb29cca4e40ecf3bdbfd",
"url": "https://osv.dev/vulnerability/CLSA-2026-1781527577",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "python3: Fix of 12 CVEs",
"summary": "- CVE-2026-0672: reject control characters in http.cookies.Morsel fields and values - CVE-2026-3644: complete CVE-2026-0672 fix: reject control chars in Morsel.update(), |=, unpickling and js_output() - CVE-2026-4224: avoid unbound C recursion in pyexpat conv_content_model to prevent C stack overflow - CVE-2025-13462: skip TarInfo AREGTYPE->DIRTYPE normalization on GNU longname/longlink follow-up headers in tarfile",
"evidence": "osv:CLSA-2026-1781527577",
"products": [
{
"name": {
"value": "python3",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-debug",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-devel",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-idle",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-libs",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-test",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-tkinter",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-21.0.5.el7_9.tuxcare.els12",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1781527577",
"aliases": [
"CLSA-2026-1781527577"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3",
"purl": "pkg:rpm/tuxcare/python3?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-debug",
"purl": "pkg:rpm/tuxcare/python3-debug?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-devel",
"purl": "pkg:rpm/tuxcare/python3-devel?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-idle",
"purl": "pkg:rpm/tuxcare/python3-idle?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-libs",
"purl": "pkg:rpm/tuxcare/python3-libs?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-test",
"purl": "pkg:rpm/tuxcare/python3-test?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-21.0.5.el7_9.tuxcare.els12"
}
]
}
],
"package": {
"name": "python3-tkinter",
"purl": "pkg:rpm/tuxcare/python3-tkinter?distro=rhel-7",
"ecosystem": "TuxCare:RHEL:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1781527577.json"
}
}
],
"modified": "2026-10-26T09:43:16.737388143Z",
"provider": "osv",
"upstream": [
"CVE-2025-13462",
"CVE-2026-0672",
"CVE-2026-3644",
"CVE-2026-4224"
],
"references": [
"https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1781527577.html",
"https://nvd.nist.gov/vuln/detail/CVE-2020-26116",
"https://nvd.nist.gov/vuln/detail/CVE-2021-28861",
"https://nvd.nist.gov/vuln/detail/CVE-2021-3177",
"https://nvd.nist.gov/vuln/detail/CVE-2021-3737",
"https://nvd.nist.gov/vuln/detail/CVE-2022-0391",
"https://nvd.nist.gov/vuln/detail/CVE-2022-45061",
"https://nvd.nist.gov/vuln/detail/CVE-2022-48560",
"https://nvd.nist.gov/vuln/detail/CVE-2022-48564",
"https://nvd.nist.gov/vuln/detail/CVE-2022-48565",
"https://nvd.nist.gov/vuln/detail/CVE-2025-13462",
"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": 449806,
"published_at": "2026-06-25T08:45:23+00:00"
}