CVEvulnerability

CVE-2026-53720

5.1 MEDIUM Published 2026-09-03 Modified 2026-09-09 Official page ↗
Status
Deferred
Published
2026-09-03
Last modified
2026-09-09
Assigner
[email protected]
CVSS 4.0 ([email protected])
5.1 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-122, CWE-1284, CWE-787

Description

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.

Related

Weakness · CWE (3)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input weakness
  • CWE-787 Out-of-bounds Write weakness

References