Cloudanix VulnDB

CVE-2026-53720

None

CVSS

—

EPSS

0.2%

Published

Sep 3, 2026

CISA due date

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The record

pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i_32 implementation does not check the nb_blocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i_32 will write past the end of the buffer and possibly corrupt the heap. This issue has been patched in version 4.0.2.8.

Affected packages

Ecosystem Package Introduced Fixed

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