CVE-2025-8291 affecting package python-py 1.11.0-1
The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations. Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.
- Products
- python-py
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-8291
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:31 UTC · Revision 1
Source evidence
CVE-2025-8291 affecting package python-py 1.11.0-1
core-osv · Original sourcePublished 7 Oct 2025, 18:16 UTC
The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations. Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.
osv:AZL-110507
python-py
Fixed versions: Not specified
Complete source record
{
"id": "3b9552698e9d970ab17391c64ec483596614c49df3ac8201f916c96480c26f4f",
"url": "https://osv.dev/vulnerability/AZL-110507",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-8291 affecting package python-py 1.11.0-1",
"summary": "The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations. Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.",
"evidence": "osv:AZL-110507",
"products": [
{
"name": {
"value": "python-py",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "AZL-110507",
"aliases": [
"AZL-110507"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.11.0-1"
}
]
}
],
"package": {
"name": "python-py",
"purl": "pkg:rpm/azure-linux/python-py",
"ecosystem": "Azure Linux:3"
},
"database_specific": {
"source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-110507.json"
}
}
],
"modified": "2026-10-27T05:36:16Z",
"provider": "osv",
"upstream": [
"CVE-2025-8291"
],
"references": [
"https://nvd.nist.gov/vuln/detail/CVE-2025-8291"
]
},
"related_cves": [
{
"value": "CVE-2025-8291",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 460634,
"published_at": "2025-10-07T18:16:00+00:00"
}