UnratedFix available
Fix CVE(s): CVE-2026-4786
Type: advisorySources: OSV
* SECURITY UPDATE: command-line option injection in webbrowser.open() through a URL whose "%action" substitution yields a leading dash - debian/patches/CVE-2026-4519.patch: carries the fix, applied since tuxcare.els1: Lib/webbrowser.py UnixBrowser.open() checks the URL after the %action substitution - debian/patches/CVE-2026-4786.patch: add the upstream regression test in Lib/test/test_webbrowser.py - CVE-2026-4786
- Products
- idle-python2.7, libpython2.7, libpython2.7-dev, libpython2.7-minimal, libpython2.7-stdlib, libpython2.7-testsuite, python2.7, python2.7-dev, python2.7-doc, python2.7-examples, python2.7-minimal
- Affected versions
- Not specified
- Fixed versions
- 2.7.16-2+deb10u4+tuxcare.els8
- CVEs
- CVE-2026-4519, CVE-2026-4786
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:46 UTC · Revision 1
Source evidence
* SECURITY UPDATE: command-line option injection in webbrowser.open() through a URL whose "%action" substitution yields a leading dash - debian/patches/CVE-2026-4519.patch: carries the fix, applied since tuxcare.els1: Lib/webbrowser.py UnixBrowser.open() checks the URL after the %action substitution - debian/patches/CVE-2026-4786.patch: add the upstream regression test in Lib/test/test_webbrowser.py - CVE-2026-4786
osv:CLSA-2026-1792928671
idle-python2.7
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
libpython2.7
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
libpython2.7-dev
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
libpython2.7-minimal
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
libpython2.7-stdlib
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
libpython2.7-testsuite
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
python2.7
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
python2.7-dev
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
python2.7-doc
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
python2.7-examples
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
python2.7-minimal
Fixed versions: 2.7.16-2+deb10u4+tuxcare.els8
Complete source record
{
"id": "5791e0ee6e862ac8230d5344fa6886e9e977c671f9cb866730a278559a8e3cf5",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792928671",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-4786",
"summary": "* SECURITY UPDATE: command-line option injection in webbrowser.open() through a URL whose \"%action\" substitution yields a leading dash - debian/patches/CVE-2026-4519.patch: carries the fix, applied since tuxcare.els1: Lib/webbrowser.py UnixBrowser.open() checks the URL after the %action substitution - debian/patches/CVE-2026-4786.patch: add the upstream regression test in Lib/test/test_webbrowser.py - CVE-2026-4786",
"evidence": "osv:CLSA-2026-1792928671",
"products": [
{
"name": {
"value": "idle-python2.7",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.7.16-2+deb10u4+tuxcare.els8",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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{
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{
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{
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{
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{
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"evidence": "/affected/6/ranges"
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"affected_versions": []
},
{
"name": {
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/8/package/name"
},
"prerequisites": [],
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{
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"evidence": "/affected/8/ranges"
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],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.7.16-2+deb10u4+tuxcare.els8",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python2.7-minimal",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.7.16-2+deb10u4+tuxcare.els8",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792928671",
"aliases": [
"CLSA-2026-1792928671"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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{
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],
"package": {
"name": "idle-python2.7",
"purl": "pkg:deb/tuxcare/idle-python2.7?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
"ranges": [
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{
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}
]
}
],
"package": {
"name": "libpython2.7",
"purl": "pkg:deb/tuxcare/libpython2.7?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
"ranges": [
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{
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}
]
}
],
"package": {
"name": "libpython2.7-dev",
"purl": "pkg:deb/tuxcare/libpython2.7-dev?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
"ranges": [
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},
{
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}
],
"package": {
"name": "libpython2.7-minimal",
"purl": "pkg:deb/tuxcare/libpython2.7-minimal?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
"ranges": [
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{
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}
]
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],
"package": {
"name": "libpython2.7-stdlib",
"purl": "pkg:deb/tuxcare/libpython2.7-stdlib?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
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],
"package": {
"name": "libpython2.7-testsuite",
"purl": "pkg:deb/tuxcare/libpython2.7-testsuite?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
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],
"package": {
"name": "python2.7",
"purl": "pkg:deb/tuxcare/python2.7?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
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],
"package": {
"name": "python2.7-dev",
"purl": "pkg:deb/tuxcare/python2.7-dev?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
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"package": {
"name": "python2.7-doc",
"purl": "pkg:deb/tuxcare/python2.7-doc?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
},
{
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}
]
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],
"package": {
"name": "python2.7-examples",
"purl": "pkg:deb/tuxcare/python2.7-examples?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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},
{
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],
"package": {
"name": "python2.7-minimal",
"purl": "pkg:deb/tuxcare/python2.7-minimal?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1792928671.json"
}
}
],
"modified": "2026-10-26T09:43:16.626644102Z",
"provider": "osv",
"upstream": [
"CVE-2026-4519",
"CVE-2026-4786"
],
"references": [
"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1792928671.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-4786"
]
},
"related_cves": [
{
"value": "CVE-2026-4519",
"evidence": "/upstream"
},
{
"value": "CVE-2026-4786",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449802,
"published_at": "2026-10-25T11:44:43+00:00"
}