HighFix available
pypy3, python3.13 and 1 more products — security advisory
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.
- Products
- pypy3, python3.13, python3.14
- Affected versions
- 3.13.11-1, 3.13.12-1, 3.13.5-2, 3.13.6-1, 3.13.7-1, 3.13.8-1, 3.13.9-1, 3.14.0-1, 3.14.0-2, 3.14.0-3, 3.14.0-4, 3.14.0-5, 3.14.0~a7-1, 3.14.0~b1-1, 3.14.0~b2-1, 3.14.0~b3-1, 3.14.0~b4-1, 3.14.0~rc1-1, 3.14.0~rc2-1, 3.14.0~rc3-1, 3.14.2-1, 3.14.3-1, 3.14.3-2, 3.14.3-3, 3.14.3-4, 3.14.3-5, 3.14.4-1, 3.14.4-2, 3.14.5~rc1-1, 7.3.19+dfsg-2, 7.3.20+dfsg-1, 7.3.20+dfsg-2, 7.3.20+dfsg-3, 7.3.20+dfsg-4, 7.3.21+dfsg-1, 7.3.21+dfsg-2, 7.3.21+dfsg-3, 7.3.21+dfsg-4
- Fixed versions
- 3.13.14-1, 3.14.5-1, 7.3.22+dfsg-1
- CVEs
- CVE-2026-4786
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:48 UTC · Revision 2
Source evidence
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.
osv:DEBIAN-CVE-2026-4786
pypy3
Fixed versions: 7.3.22+dfsg-1
python3.13
Fixed versions: 3.13.14-1
python3.14
Fixed versions: 3.14.5-1
Complete source record
{
"id": "1673b038e3c464d913c5b2d23966bd03d345e8d3d789a3ea240dade19c89ce5f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-4786",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-4786",
"summary": "Mitgation of CVE-2026-4519 was incomplete. If the URL contained \"%action\" the mitigation could be bypassed for certain browser types the \"webbrowser.open()\" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.",
"evidence": "osv:DEBIAN-CVE-2026-4786",
"products": [
{
"name": {
"value": "pypy3",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.3.22+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "7.3.19+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.20+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.20+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.20+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.20+dfsg-4",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.21+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.21+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.21+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "7.3.21+dfsg-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "python3.13",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.13.14-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "3.13.11-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.12-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.5-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.8-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.13.9-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "python3.14",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.14.5-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.14.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0-4",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0-5",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~a7-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~b1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~b2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~b3-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~b4-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~rc1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~rc2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.0~rc3-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.3-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.3-3",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.3-4",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.3-5",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.4-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.14.5~rc1-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-4786",
"aliases": [
"DEBIAN-CVE-2026-4786"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.3.22+dfsg-1"
}
]
}
],
"package": {
"name": "pypy3",
"purl": "pkg:deb/debian/pypy3?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"7.3.19+dfsg-2",
"7.3.20+dfsg-1",
"7.3.20+dfsg-2",
"7.3.20+dfsg-3",
"7.3.20+dfsg-4",
"7.3.21+dfsg-1",
"7.3.21+dfsg-2",
"7.3.21+dfsg-3",
"7.3.21+dfsg-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.13.14-1"
}
]
}
],
"package": {
"name": "python3.13",
"purl": "pkg:deb/debian/python3.13?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.13.11-1",
"3.13.12-1",
"3.13.5-2",
"3.13.6-1",
"3.13.7-1",
"3.13.8-1",
"3.13.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.14.5-1"
}
]
}
],
"package": {
"name": "python3.14",
"purl": "pkg:deb/debian/python3.14?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.14.0-1",
"3.14.0-2",
"3.14.0-3",
"3.14.0-4",
"3.14.0-5",
"3.14.0~a7-1",
"3.14.0~b1-1",
"3.14.0~b2-1",
"3.14.0~b3-1",
"3.14.0~b4-1",
"3.14.0~rc1-1",
"3.14.0~rc2-1",
"3.14.0~rc3-1",
"3.14.2-1",
"3.14.3-1",
"3.14.3-2",
"3.14.3-3",
"3.14.3-4",
"3.14.3-5",
"3.14.4-1",
"3.14.4-2",
"3.14.5~rc1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4786.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:39.234343019Z",
"provider": "osv",
"upstream": [
"CVE-2026-4786"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-4786"
]
},
"related_cves": [
{
"value": "CVE-2026-4786",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461231,
"published_at": "2026-04-13T22:16:30.413+00:00"
}