UnratedFix available
python3: Fix of 4 CVEs
Type: advisorySources: OSV
- CVE-2026-87910: tarfile: skip a link member when the extraction filter returns None for its hardlink-extraction fallback instead of ignoring the filter result - CVE-2026-17084: stringprep: build the RFC 3454 B.2/B.3 tables from Unicode 3.2.0 data so IDNA 2003 encoding of newly case-folding characters no longer depends on the interpreter's Unicode version - CVE-2026-15310: zipfile: bound the output of each bzip2/LZMA decompress() call so a small crafted member cannot trigger an unbounded allocation - CVE-2026-9669: bz2: refuse to reuse a BZ2Decompressor after a decompression error, so retrying with the same object can no longer resume from an invalid internal state and write out of bounds
- Products
- platform-python, platform-python-debug, platform-python-devel, python3-devel, python3-idle, python3-libs, python3-test, python3-tkinter
- Affected versions
- Not specified
- Fixed versions
- 3.6.8-62.el8.tuxcare.els19
- CVEs
- CVE-2026-15310, CVE-2026-17084, CVE-2026-87910, CVE-2026-9669
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:50 UTC · Revision 1
Source evidence
- CVE-2026-87910: tarfile: skip a link member when the extraction filter returns None for its hardlink-extraction fallback instead of ignoring the filter result - CVE-2026-17084: stringprep: build the RFC 3454 B.2/B.3 tables from Unicode 3.2.0 data so IDNA 2003 encoding of newly case-folding characters no longer depends on the interpreter's Unicode version - CVE-2026-15310: zipfile: bound the output of each bzip2/LZMA decompress() call so a small crafted member cannot trigger an unbounded allocation - CVE-2026-9669: bz2: refuse to reuse a BZ2Decompressor after a decompression error, so retrying with the same object can no longer resume from an invalid internal state and write out of bounds
osv:CLSA-2026-1789995979
platform-python
Fixed versions: 3.6.8-62.el8.tuxcare.els19
platform-python-debug
Fixed versions: 3.6.8-62.el8.tuxcare.els19
platform-python-devel
Fixed versions: 3.6.8-62.el8.tuxcare.els19
python3-devel
Fixed versions: 3.6.8-62.el8.tuxcare.els19
python3-idle
Fixed versions: 3.6.8-62.el8.tuxcare.els19
python3-libs
Fixed versions: 3.6.8-62.el8.tuxcare.els19
python3-test
Fixed versions: 3.6.8-62.el8.tuxcare.els19
python3-tkinter
Fixed versions: 3.6.8-62.el8.tuxcare.els19
Complete source record
{
"id": "8ed9df3e349e57cfb67e71a27b2f675c299a28957560d5babc9e0245ff561918",
"url": "https://osv.dev/vulnerability/CLSA-2026-1789995979",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "python3: Fix of 4 CVEs",
"summary": "- CVE-2026-87910: tarfile: skip a link member when the extraction filter returns None for its hardlink-extraction fallback instead of ignoring the filter result - CVE-2026-17084: stringprep: build the RFC 3454 B.2/B.3 tables from Unicode 3.2.0 data so IDNA 2003 encoding of newly case-folding characters no longer depends on the interpreter's Unicode version - CVE-2026-15310: zipfile: bound the output of each bzip2/LZMA decompress() call so a small crafted member cannot trigger an unbounded allocation - CVE-2026-9669: bz2: refuse to reuse a BZ2Decompressor after a decompression error, so retrying with the same object can no longer resume from an invalid internal state and write out of bounds",
"evidence": "osv:CLSA-2026-1789995979",
"products": [
{
"name": {
"value": "platform-python",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-62.el8.tuxcare.els19",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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},
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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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"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/2/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
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{
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"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-idle",
"evidence": "/affected/4/package/name"
},
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{
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"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-libs",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-62.el8.tuxcare.els19",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-test",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-62.el8.tuxcare.els19",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-tkinter",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.8-62.el8.tuxcare.els19",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1789995979",
"aliases": [
"CLSA-2026-1789995979"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.8-62.el8.tuxcare.els19"
}
]
}
],
"package": {
"name": "platform-python",
"purl": "pkg:rpm/tuxcare/platform-python?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1789995979.json"
}
},
{
"ranges": [
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],
"package": {
"name": "platform-python-debug",
"purl": "pkg:rpm/tuxcare/platform-python-debug?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1789995979.json"
}
},
{
"ranges": [
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],
"package": {
"name": "platform-python-devel",
"purl": "pkg:rpm/tuxcare/platform-python-devel?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
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}
},
{
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],
"package": {
"name": "python3-devel",
"purl": "pkg:rpm/tuxcare/python3-devel?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
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}
},
{
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}
]
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],
"package": {
"name": "python3-idle",
"purl": "pkg:rpm/tuxcare/python3-idle?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1789995979.json"
}
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{
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],
"package": {
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"purl": "pkg:rpm/tuxcare/python3-libs?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
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}
},
{
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],
"package": {
"name": "python3-test",
"purl": "pkg:rpm/tuxcare/python3-test?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1789995979.json"
}
},
{
"ranges": [
{
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}
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],
"package": {
"name": "python3-tkinter",
"purl": "pkg:rpm/tuxcare/python3-tkinter?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1789995979.json"
}
}
],
"modified": "2026-10-26T09:43:32.352953053Z",
"provider": "osv",
"upstream": [
"CVE-2026-15310",
"CVE-2026-17084",
"CVE-2026-87910",
"CVE-2026-9669"
],
"references": [
"https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1789995979.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-15310",
"https://nvd.nist.gov/vuln/detail/CVE-2026-17084",
"https://nvd.nist.gov/vuln/detail/CVE-2026-87910",
"https://nvd.nist.gov/vuln/detail/CVE-2026-9669"
]
},
"related_cves": [
{
"value": "CVE-2026-15310",
"evidence": "/upstream"
},
{
"value": "CVE-2026-17084",
"evidence": "/upstream"
},
{
"value": "CVE-2026-87910",
"evidence": "/upstream"
},
{
"value": "CVE-2026-9669",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449979,
"published_at": "2026-09-21T13:06:33+00:00"
}