PYSEC-2026-355
Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:22
VLAI
Details
Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the ElasticRendezvousHandler, a subclass of KVStoreHandler. Specifically, the _put_value method in ElasticRendezvousHandler calls codec.loads_base64(value), which eventually invokes cloudpickle.loads(decoded). This allows an attacker to send a malicious pickle object via a PUT request, leading to arbitrary code execution on the server.
Severity
9.8 (Critical)
Impacted products
| Name | purl | horovod | pkg:pypi/horovod |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "horovod",
"purl": "pkg:pypi/horovod"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.28.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.10.0",
"0.10.1",
"0.10.2",
"0.11.0",
"0.11.1",
"0.11.2",
"0.11.3",
"0.12.0",
"0.12.1",
"0.13.0",
"0.13.1",
"0.13.10",
"0.13.11",
"0.13.2",
"0.13.3",
"0.13.4",
"0.13.5",
"0.13.6",
"0.13.7",
"0.13.8",
"0.14.0",
"0.14.1",
"0.15.0",
"0.15.1",
"0.15.2",
"0.16.0",
"0.16.1",
"0.16.2",
"0.16.3",
"0.16.4",
"0.18.0",
"0.18.1",
"0.18.2",
"0.19.0",
"0.19.1",
"0.19.2",
"0.19.3",
"0.19.4",
"0.19.5",
"0.20.0",
"0.20.1",
"0.20.2",
"0.20.3",
"0.21.0",
"0.21.1",
"0.21.2",
"0.21.3",
"0.22.0",
"0.22.1",
"0.23.0",
"0.24.0",
"0.24.1",
"0.24.2",
"0.24.3",
"0.25.0",
"0.26.0",
"0.26.1",
"0.27.0",
"0.28.0",
"0.28.1",
"0.9.0",
"0.9.1",
"0.9.10",
"0.9.11",
"0.9.12",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"0.9.7",
"0.9.8",
"0.9.9"
]
}
],
"aliases": [
"CVE-2024-10190",
"GHSA-mrhh-3ggq-23p2"
],
"details": "Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the `ElasticRendezvousHandler`, a subclass of `KVStoreHandler`. Specifically, the `_put_value` method in `ElasticRendezvousHandler` calls `codec.loads_base64(value)`, which eventually invokes `cloudpickle.loads(decoded)`. This allows an attacker to send a malicious pickle object via a PUT request, leading to arbitrary code execution on the server.",
"id": "PYSEC-2026-355",
"modified": "2026-07-01T20:22:54.318849Z",
"published": "2026-06-29T11:50:35.347691Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10190"
},
{
"type": "PACKAGE",
"url": "https://github.com/horovod/horovod"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/3e398d1f-70c2-4e05-ae22-f5d66b19a754"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/horovod"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-mrhh-3ggq-23p2"
}
],
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Horovod Vulnerable to Command Injection"
}
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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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