ubuntu-cve-2026-31048
Vulnerability from osv_ubuntu
Published
2026-04-13 20:16
Modified
2026-05-20 15:26
Summary
Details
An issue in the pickle protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.
Severity
9.8 (Critical)
N/A (UNKNOWN)
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro",
"binary_version": "1:3.14-4"
},
{
"binary_name": "pyro-examples",
"binary_version": "1:3.14-4"
},
{
"binary_name": "pyro-gui",
"binary_version": "1:3.14-4"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "pyro",
"purl": "pkg:deb/ubuntu/pyro@1:3.14-4?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:3.14-1.2",
"1:3.14-2",
"1:3.14-4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro4",
"binary_version": "4.23-2"
},
{
"binary_name": "pyro4-examples",
"binary_version": "4.23-2"
},
{
"binary_name": "python2-pyro4",
"binary_version": "4.23-2"
},
{
"binary_name": "python3-pyro4",
"binary_version": "4.23-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "pyro4",
"purl": "pkg:deb/ubuntu/pyro4@4.23-2?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.23-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro",
"binary_version": "1:3.16-2"
},
{
"binary_name": "pyro-examples",
"binary_version": "1:3.16-2"
},
{
"binary_name": "pyro-gui",
"binary_version": "1:3.16-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "pyro",
"purl": "pkg:deb/ubuntu/pyro@1:3.16-2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:3.16-1",
"1:3.16-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro4",
"binary_version": "4.63-1"
},
{
"binary_name": "pyro4-examples",
"binary_version": "4.63-1"
},
{
"binary_name": "python2-pyro4",
"binary_version": "4.63-1"
},
{
"binary_name": "python3-pyro4",
"binary_version": "4.63-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "pyro4",
"purl": "pkg:deb/ubuntu/pyro4@4.63-1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.61-1",
"4.62-1",
"4.63-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro4",
"binary_version": "4.79-1"
},
{
"binary_name": "pyro4-examples",
"binary_version": "4.79-1"
},
{
"binary_name": "python3-pyro4",
"binary_version": "4.79-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "pyro4",
"purl": "pkg:deb/ubuntu/pyro4@4.79-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.75-1",
"4.76-1",
"4.79-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro4",
"binary_version": "4.82-1"
},
{
"binary_name": "pyro4-examples",
"binary_version": "4.82-1"
},
{
"binary_name": "python3-pyro4",
"binary_version": "4.82-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "pyro4",
"purl": "pkg:deb/ubuntu/pyro4@4.82-1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.80-1",
"4.81-2",
"4.82-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro4",
"binary_version": "4.82-4"
},
{
"binary_name": "pyro4-examples",
"binary_version": "4.82-4"
},
{
"binary_name": "python3-pyro4",
"binary_version": "4.82-4"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "pyro4",
"purl": "pkg:deb/ubuntu/pyro4@4.82-4?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.82-2",
"4.82-4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro5-examples",
"binary_version": "5.14-2ubuntu0.1"
},
{
"binary_name": "python3-pyro5",
"binary_version": "5.14-2ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "pyro5",
"purl": "pkg:deb/ubuntu/pyro5@5.14-2ubuntu0.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.14-2",
"5.14-2ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro5-examples",
"binary_version": "5.15-1ubuntu1"
},
{
"binary_name": "python3-pyro5",
"binary_version": "5.15-1ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "pyro5",
"purl": "pkg:deb/ubuntu/pyro5@5.15-1ubuntu1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.15-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pyro5-examples",
"binary_version": "5.15-1ubuntu1"
},
{
"binary_name": "python3-pyro5",
"binary_version": "5.15-1ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "pyro5",
"purl": "pkg:deb/ubuntu/pyro5@5.15-1ubuntu1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.15-1ubuntu1"
]
}
],
"aliases": [],
"details": "An issue in the \u003ccode\u003epickle\u003c/code\u003e protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.",
"id": "UBUNTU-CVE-2026-31048",
"modified": "2026-05-20T15:26:08Z",
"published": "2026-04-13T20:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-31048"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-31048"
},
{
"type": "REPORT",
"url": "https://github.com/Sif-0x01/security-advisories/security/advisories/GHSA-7625-w9h5-83rv"
},
{
"type": "REPORT",
"url": "https://github.com/irmen/Pyro3/blob/master/Pyro/protocol.py#L672-L711"
},
{
"type": "REPORT",
"url": "https://github.com/irmen/Pyro3/blob/master/docs/9-security.html#L341-L346"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-31048"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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