ubuntu-cve-2026-7774
Vulnerability from osv_ubuntu
Published
2026-06-04 16:16
Modified
2026-07-06 14:08
Summary
Details
tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pypy3",
"binary_version": "7.3.1+dfsg-4ubuntu0.1"
},
{
"binary_name": "pypy3-lib",
"binary_version": "7.3.1+dfsg-4ubuntu0.1"
},
{
"binary_name": "pypy3-lib-testsuite",
"binary_version": "7.3.1+dfsg-4ubuntu0.1"
},
{
"binary_name": "pypy3-tk",
"binary_version": "7.3.1+dfsg-4ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "pypy3",
"purl": "pkg:deb/ubuntu/pypy3@7.3.1+dfsg-4ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.1.1+dfsg-1",
"7.2.0+dfsg-1",
"7.3.0+dfsg-1",
"7.3.0+dfsg-1ubuntu2",
"7.3.0+dfsg-1ubuntu3",
"7.3.1+dfsg-4",
"7.3.1+dfsg-4ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pypy3",
"binary_version": "7.3.9+dfsg-1ubuntu0.1"
},
{
"binary_name": "pypy3-lib",
"binary_version": "7.3.9+dfsg-1ubuntu0.1"
},
{
"binary_name": "pypy3-lib-testsuite",
"binary_version": "7.3.9+dfsg-1ubuntu0.1"
},
{
"binary_name": "pypy3-tk",
"binary_version": "7.3.9+dfsg-1ubuntu0.1"
},
{
"binary_name": "pypy3-venv",
"binary_version": "7.3.9+dfsg-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "pypy3",
"purl": "pkg:deb/ubuntu/pypy3@7.3.9+dfsg-1ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.3.5+dfsg-2",
"7.3.7+dfsg-1",
"7.3.7+dfsg-4",
"7.3.7+dfsg-5",
"7.3.8+dfsg-2",
"7.3.9+dfsg-1",
"7.3.9+dfsg-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pypy3",
"binary_version": "7.3.15+dfsg-1build3"
},
{
"binary_name": "pypy3-lib",
"binary_version": "7.3.15+dfsg-1build3"
},
{
"binary_name": "pypy3-lib-testsuite",
"binary_version": "7.3.15+dfsg-1build3"
},
{
"binary_name": "pypy3-tk",
"binary_version": "7.3.15+dfsg-1build3"
},
{
"binary_name": "pypy3-venv",
"binary_version": "7.3.15+dfsg-1build3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "pypy3",
"purl": "pkg:deb/ubuntu/pypy3@7.3.15+dfsg-1build3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.3.12+dfsg-1",
"7.3.13+dfsg-1",
"7.3.14+dfsg-1",
"7.3.15+dfsg-1",
"7.3.15+dfsg-1build2",
"7.3.15+dfsg-1build3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "idle-python3.12",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "libpython3.12-minimal",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "libpython3.12-stdlib",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "libpython3.12-testsuite",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "libpython3.12t64",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12-examples",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12-full",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12-minimal",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12-nopie",
"binary_version": "3.12.3-1ubuntu0.15"
},
{
"binary_name": "python3.12-venv",
"binary_version": "3.12.3-1ubuntu0.15"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "python3.12",
"purl": "pkg:deb/ubuntu/python3.12@3.12.3-1ubuntu0.15?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.12.3-1ubuntu0.15"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.12.0-1",
"3.12.0-5",
"3.12.0-6",
"3.12.0-7",
"3.12.1-2",
"3.12.2-1",
"3.12.2-4build3",
"3.12.2-4build4",
"3.12.2-5ubuntu3",
"3.12.3-1",
"3.12.3-1ubuntu0.1",
"3.12.3-1ubuntu0.2",
"3.12.3-1ubuntu0.3",
"3.12.3-1ubuntu0.4",
"3.12.3-1ubuntu0.5",
"3.12.3-1ubuntu0.6",
"3.12.3-1ubuntu0.7",
"3.12.3-1ubuntu0.8",
"3.12.3-1ubuntu0.9",
"3.12.3-1ubuntu0.10",
"3.12.3-1ubuntu0.11",
"3.12.3-1ubuntu0.12",
"3.12.3-1ubuntu0.13"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pypy3",
"binary_version": "7.3.20+dfsg-3"
},
{
"binary_name": "pypy3-lib",
"binary_version": "7.3.20+dfsg-3"
},
{
"binary_name": "pypy3-lib-testsuite",
"binary_version": "7.3.20+dfsg-3"
},
{
"binary_name": "pypy3-tk",
"binary_version": "7.3.20+dfsg-3"
},
{
"binary_name": "pypy3-venv",
"binary_version": "7.3.20+dfsg-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "pypy3",
"purl": "pkg:deb/ubuntu/pypy3@7.3.20+dfsg-3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.3.19+dfsg-1",
"7.3.19+dfsg-2",
"7.3.20+dfsg-1",
"7.3.20+dfsg-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "idle-python3.13",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "libpython3.13",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "libpython3.13-minimal",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "libpython3.13-stdlib",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "libpython3.13-testsuite",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-examples",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-full",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-gdbm",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-minimal",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-nopie",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-tk",
"binary_version": "3.13.7-1ubuntu0.4"
},
{
"binary_name": "python3.13-venv",
"binary_version": "3.13.7-1ubuntu0.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "python3.13",
"purl": "pkg:deb/ubuntu/python3.13@3.13.7-1ubuntu0.4?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.13.3-1",
"3.13.3-2",
"3.13.3-4",
"3.13.4-1",
"3.13.5-1",
"3.13.5-2",
"3.13.6-1",
"3.13.7-1",
"3.13.7-1ubuntu0.1",
"3.13.7-1ubuntu0.2",
"3.13.7-1ubuntu0.3",
"3.13.7-1ubuntu0.4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "idle-python3.14",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "libpython3.14",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "libpython3.14-minimal",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "libpython3.14-stdlib",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "libpython3.14-testsuite",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-examples",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-full",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-gdbm",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-minimal",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-nopie",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-tk",
"binary_version": "3.14.0-1ubuntu0.3"
},
{
"binary_name": "python3.14-venv",
"binary_version": "3.14.0-1ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "python3.14",
"purl": "pkg:deb/ubuntu/python3.14@3.14.0-1ubuntu0.3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.14.0~a7-0ubuntu1",
"3.14.0~b1-1",
"3.14.0~b3-1",
"3.14.0~rc1-1",
"3.14.0~rc2-1",
"3.14.0~rc3-1",
"3.14.0-1",
"3.14.0-1ubuntu0.1",
"3.14.0-1ubuntu0.2",
"3.14.0-1ubuntu0.3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pypy3",
"binary_version": "7.3.20+dfsg-4"
},
{
"binary_name": "pypy3-lib",
"binary_version": "7.3.20+dfsg-4"
},
{
"binary_name": "pypy3-lib-testsuite",
"binary_version": "7.3.20+dfsg-4"
},
{
"binary_name": "pypy3-tk",
"binary_version": "7.3.20+dfsg-4"
},
{
"binary_name": "pypy3-venv",
"binary_version": "7.3.20+dfsg-4"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "pypy3",
"purl": "pkg:deb/ubuntu/pypy3@7.3.20+dfsg-4?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.3.20+dfsg-3",
"7.3.20+dfsg-4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "idle-python3.14",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "libpython3.14",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "libpython3.14-minimal",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "libpython3.14-stdlib",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "libpython3.14-testsuite",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-examples",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-full",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-gdbm",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-minimal",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-nopie",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-tk",
"binary_version": "3.14.4-1ubuntu0.1"
},
{
"binary_name": "python3.14-venv",
"binary_version": "3.14.4-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "python3.14",
"purl": "pkg:deb/ubuntu/python3.14@3.14.4-1ubuntu0.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.14.4-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.14.0-1",
"3.14.0-2",
"3.14.0-4",
"3.14.2-1",
"3.14.3-1",
"3.14.3-2",
"3.14.3-3",
"3.14.3-5",
"3.14.4-1"
]
}
],
"aliases": [],
"details": "tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.",
"id": "UBUNTU-CVE-2026-7774",
"modified": "2026-07-06T14:08:40Z",
"published": "2026-06-04T16:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-7774"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-7774"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/06/04/9"
},
{
"type": "REPORT",
"url": "https://github.com/python/cpython/pull/149487"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8509-1"
}
],
"related": [
"USN-8509-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-7774"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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