CVE-2020-10735
7.5CVSSHIGH
Description
A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
and 9 more affected products View all →
Exploitability
Official Patch Available
References
https://access.redhat.com/security/cve/CVE-2020-10735
access.redhat.com
https://github.com/python/cpython/issues/95778
github.com
https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y
docs.google.com
and 45 more references View all →
Timeline
Published
Sep 9, 2022
Last Updated
Nov 3, 2025
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