python3.11: Fix of 4 CVEs
- CVE-2026-17084: use the Unicode 3.2.0 codepoint attributes required by RFC 3454 for the stringprep B.2/B.3 mappings instead of the running interpreter's, so IDNA 2003 encodes domain names consistently - CVE-2026-87910: skip the member in tarfile's link-extraction fallback when either filter call returns None, instead of discarding the first call's result - CVE-2026-19672: normalize '..' components in tarfile member names so the tar and data extraction filters no longer create intermediate directories outside the destination - CVE-2026-12003: remove the VPATH-relative Modules/Setup.local build landmark fallback from getpath, making pybuilddir.txt the sole source-tree indicator
- Products
- python3.11, python3.11-debug, python3.11-devel, python3.11-idle, python3.11-libs, python3.11-test, python3.11-tkinter
- Affected versions
- Not specified
- Fixed versions
- 3.11.2-2.el9_2.2.tuxcare.els34
- CVEs
- CVE-2026-12003, CVE-2026-17084, CVE-2026-19672, CVE-2026-87910
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:55 UTC · Revision 1
Source evidence
- CVE-2026-17084: use the Unicode 3.2.0 codepoint attributes required by RFC 3454 for the stringprep B.2/B.3 mappings instead of the running interpreter's, so IDNA 2003 encodes domain names consistently - CVE-2026-87910: skip the member in tarfile's link-extraction fallback when either filter call returns None, instead of discarding the first call's result - CVE-2026-19672: normalize '..' components in tarfile member names so the tar and data extraction filters no longer create intermediate directories outside the destination - CVE-2026-12003: remove the VPATH-relative Modules/Setup.local build landmark fallback from getpath, making pybuilddir.txt the sole source-tree indicator
osv:CLSA-2026-1790155146
python3.11
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-debug
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-devel
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-idle
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-libs
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-test
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
python3.11-tkinter
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els34
Complete source record
{
"id": "7ed45b9d3362a611b57f7c4047c1c17db359b5bc48a3b8e796aa1563d4212306",
"url": "https://osv.dev/vulnerability/CLSA-2026-1790155146",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "python3.11: Fix of 4 CVEs",
"summary": "- CVE-2026-17084: use the Unicode 3.2.0 codepoint attributes required by RFC 3454 for the stringprep B.2/B.3 mappings instead of the running interpreter's, so IDNA 2003 encodes domain names consistently - CVE-2026-87910: skip the member in tarfile's link-extraction fallback when either filter call returns None, instead of discarding the first call's result - CVE-2026-19672: normalize '..' components in tarfile member names so the tar and data extraction filters no longer create intermediate directories outside the destination - CVE-2026-12003: remove the VPATH-relative Modules/Setup.local build landmark fallback from getpath, making pybuilddir.txt the sole source-tree indicator",
"evidence": "osv:CLSA-2026-1790155146",
"products": [
{
"name": {
"value": "python3.11",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.11.2-2.el9_2.2.tuxcare.els34",
"evidence": "/affected/0/ranges"
}
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/name"
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"evidence": "/affected/1/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/2/package/name"
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"evidence": "/affected/2/ranges"
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/3/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/4/package/name"
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"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3.11-test",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
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{
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"evidence": "/affected/5/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "python3.11-tkinter",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.11.2-2.el9_2.2.tuxcare.els34",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1790155146",
"aliases": [
"CLSA-2026-1790155146"
],
"affected": [
{
"ranges": [
{
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],
"package": {
"name": "python3.11",
"purl": "pkg:rpm/tuxcare/python3.11?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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}
},
{
"ranges": [
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]
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],
"package": {
"name": "python3.11-debug",
"purl": "pkg:rpm/tuxcare/python3.11-debug?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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{
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"package": {
"name": "python3.11-devel",
"purl": "pkg:rpm/tuxcare/python3.11-devel?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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{
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"package": {
"name": "python3.11-idle",
"purl": "pkg:rpm/tuxcare/python3.11-idle?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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},
{
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],
"package": {
"name": "python3.11-libs",
"purl": "pkg:rpm/tuxcare/python3.11-libs?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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},
{
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"package": {
"name": "python3.11-test",
"purl": "pkg:rpm/tuxcare/python3.11-test?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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}
},
{
"ranges": [
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],
"package": {
"name": "python3.11-tkinter",
"purl": "pkg:rpm/tuxcare/python3.11-tkinter?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1790155146.json"
}
}
],
"modified": "2026-10-26T09:43:45.018995581Z",
"provider": "osv",
"upstream": [
"CVE-2026-12003",
"CVE-2026-17084",
"CVE-2026-19672",
"CVE-2026-87910"
],
"references": [
"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1790155146.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-12003",
"https://nvd.nist.gov/vuln/detail/CVE-2026-17084",
"https://nvd.nist.gov/vuln/detail/CVE-2026-19672",
"https://nvd.nist.gov/vuln/detail/CVE-2026-87910"
]
},
"related_cves": [
{
"value": "CVE-2026-12003",
"evidence": "/upstream"
},
{
"value": "CVE-2026-17084",
"evidence": "/upstream"
},
{
"value": "CVE-2026-19672",
"evidence": "/upstream"
},
{
"value": "CVE-2026-87910",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450115,
"published_at": "2026-09-23T09:19:18+00:00"
}