UnratedFix available
python-cryptography vulnerability
Type: advisorySources: OSV
It was discovered that python-cryptography incorrectly handled subgroup validation for SECT curves. A remote attacker could use this issue to perform a subgroup attack and possibly recover the least significant bits of private keys.
- Products
- python-cryptography
- Affected versions
- 3.3.2-1, 3.3.2-1build1, 3.4.8-1, 3.4.8-1ubuntu1, 3.4.8-1ubuntu2, 3.4.8-1ubuntu2.1, 3.4.8-1ubuntu2.2, 38.0.4-4, 38.0.4-4ubuntu1, 41.0.7-3, 41.0.7-4build2, 41.0.7-4build3, 41.0.7-4ubuntu0.1, 43.0.0-1ubuntu1
- Fixed versions
- 3.4.8-1ubuntu2.3, 41.0.7-4ubuntu0.3, 43.0.0-1ubuntu1.1
- CVEs
- CVE-2026-26007
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:16 UTC · Revision 1
Source evidence
It was discovered that python-cryptography incorrectly handled subgroup validation for SECT curves. A remote attacker could use this issue to perform a subgroup attack and possibly recover the least significant bits of private keys.
osv:USN-8087-1
python-cryptography
Fixed versions: 3.4.8-1ubuntu2.3
python-cryptography
Fixed versions: 41.0.7-4ubuntu0.3
python-cryptography
Fixed versions: 43.0.0-1ubuntu1.1
Complete source record
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"modified": "2026-10-27T04:16:49.603983280Z",
"provider": "osv",
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 460209,
"published_at": "2026-03-12T14:16:11+00:00"
}