HighFix available
Red Hat Security Advisory: python3.9 security update
Type: advisorySources: OSV
- Products
- python-unversioned-command, python3, python3-debug, python3-devel, python3-idle, python3-libs, python3-test, python3-tkinter, python3.9, python3.9-debuginfo, python3.9-debugsource
- Affected versions
- Not specified
- Fixed versions
- 0:3.9.18-3.el9_4.13
- CVEs
- CVE-2026-4786, CVE-2026-6100
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:11 UTC · Revision 1
Source evidence
Red Hat Security Advisory: python3.9 security update
core-osv · Original sourcePublished 28 May 2026, 10:07 UTC
Red Hat Security Advisory: python3.9 security update
osv:RHSA-2026:21682
python-unversioned-command
Fixed versions: 0:3.9.18-3.el9_4.13
python3-devel
Fixed versions: 0:3.9.18-3.el9_4.13
python3-tkinter
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debuginfo
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debugsource
Fixed versions: 0:3.9.18-3.el9_4.13
python3
Fixed versions: 0:3.9.18-3.el9_4.13
python3-libs
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debuginfo
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debugsource
Fixed versions: 0:3.9.18-3.el9_4.13
python3
Fixed versions: 0:3.9.18-3.el9_4.13
python3-debug
Fixed versions: 0:3.9.18-3.el9_4.13
python3-idle
Fixed versions: 0:3.9.18-3.el9_4.13
python3-test
Fixed versions: 0:3.9.18-3.el9_4.13
python3-tkinter
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debuginfo
Fixed versions: 0:3.9.18-3.el9_4.13
python3.9-debugsource
Fixed versions: 0:3.9.18-3.el9_4.13
Complete source record
{
"id": "7339571afcd383870d8a01605bfd6745b722de0406aaace0d7e4c7f273c47971",
"url": "https://osv.dev/vulnerability/RHSA-2026%3A21682",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Red Hat Security Advisory: python3.9 security update",
"summary": "Red Hat Security Advisory: python3.9 security update",
"evidence": "osv:RHSA-2026:21682",
"products": [
{
"name": {
"value": "python-unversioned-command",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-tkinter",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debuginfo",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debugsource",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-libs",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debuginfo",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debugsource",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-debug",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-idle",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-test",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-tkinter",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debuginfo",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.9-debugsource",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:3.9.18-3.el9_4.13",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "RHSA-2026:21682",
"aliases": [
"RHSA-2026:21682"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python-unversioned-command",
"purl": "pkg:rpm/redhat/python-unversioned-command",
"ecosystem": "Red Hat:rhel_eus:9.4::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-devel",
"purl": "pkg:rpm/redhat/python3-devel",
"ecosystem": "Red Hat:rhel_eus:9.4::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-tkinter",
"purl": "pkg:rpm/redhat/python3-tkinter",
"ecosystem": "Red Hat:rhel_eus:9.4::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debuginfo",
"purl": "pkg:rpm/redhat/python3.9-debuginfo",
"ecosystem": "Red Hat:rhel_eus:9.4::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debugsource",
"purl": "pkg:rpm/redhat/python3.9-debugsource",
"ecosystem": "Red Hat:rhel_eus:9.4::appstream"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3",
"purl": "pkg:rpm/redhat/python3",
"ecosystem": "Red Hat:rhel_eus:9.4::baseos"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-libs",
"purl": "pkg:rpm/redhat/python3-libs",
"ecosystem": "Red Hat:rhel_eus:9.4::baseos"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9",
"purl": "pkg:rpm/redhat/python3.9",
"ecosystem": "Red Hat:rhel_eus:9.4::baseos"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debuginfo",
"purl": "pkg:rpm/redhat/python3.9-debuginfo",
"ecosystem": "Red Hat:rhel_eus:9.4::baseos"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debugsource",
"purl": "pkg:rpm/redhat/python3.9-debugsource",
"ecosystem": "Red Hat:rhel_eus:9.4::baseos"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3",
"purl": "pkg:rpm/redhat/python3",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-debug",
"purl": "pkg:rpm/redhat/python3-debug",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-idle",
"purl": "pkg:rpm/redhat/python3-idle",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-test",
"purl": "pkg:rpm/redhat/python3-test",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3-tkinter",
"purl": "pkg:rpm/redhat/python3-tkinter",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debuginfo",
"purl": "pkg:rpm/redhat/python3.9-debuginfo",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:3.9.18-3.el9_4.13"
}
]
}
],
"package": {
"name": "python3.9-debugsource",
"purl": "pkg:rpm/redhat/python3.9-debugsource",
"ecosystem": "Red Hat:rhel_eus:9.4::crb"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:21682.json"
}
}
],
"modified": "2026-10-17T10:10:56Z",
"provider": "osv",
"upstream": [
"CVE-2026-4786",
"CVE-2026-6100"
],
"references": [
"https://access.redhat.com/errata/RHSA-2026:21682",
"https://access.redhat.com/security/updates/classification/#important",
"https://bugzilla.redhat.com/show_bug.cgi?id=2457932",
"https://bugzilla.redhat.com/show_bug.cgi?id=2458049",
"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21682.json",
"https://access.redhat.com/security/cve/CVE-2026-4786",
"https://www.cve.org/CVERecord?id=CVE-2026-4786",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4786",
"https://github.com/python/cpython/issues/148169",
"https://github.com/python/cpython/pull/148170",
"https://mail.python.org/archives/list/security-announce@python.org/thread/JQDUNJVB4AQNTJECSUKOBDU3XCJIPSE5/",
"https://access.redhat.com/security/cve/CVE-2026-6100",
"https://www.cve.org/CVERecord?id=CVE-2026-6100",
"https://nvd.nist.gov/vuln/detail/CVE-2026-6100",
"https://github.com/python/cpython/commit/6a5f79c8d7bbf22b083b240910c7a8781a59437d",
"https://github.com/python/cpython/commit/8fc66aef6d7b3ae58f43f5c66f9366cc8cbbfcd2",
"https://github.com/python/cpython/commit/c3cf71c3366fe49acb776a639405c0eea6169c20",
"https://github.com/python/cpython/issues/148395",
"https://github.com/python/cpython/pull/148396",
"https://mail.python.org/archives/list/security-announce@python.org/thread/HTWB2Z6KT5QQX4RYEZAFININDHNOSIF3/"
]
},
"related_cves": [
{
"value": "CVE-2026-4786",
"evidence": "/upstream"
},
{
"value": "CVE-2026-6100",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 352848,
"published_at": "2026-05-28T10:07:53+00:00"
}