SEPTEMBER 17, 2026
Live Feed
Back to database
Case File

CVE-2026-53720

MEDIUM · CVSS 5.1 EPSS 0.13% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-03 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The argon2i_32 implementation in pymonocypher versions prior to 4.0.2.8 is vulnerable due to inadequate validation of the nb_blocks size, allowing for potential heap corruption through buffer overflows. This could lead to application instability or exploitation by attackers if a sufficiently large buffer is not provided. Developers and organizations using affected versions should prioritize upgrading to version 4.0.2.8 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-53720
Severity
MEDIUM
CVSS
5.1
EPSS
0.13%

Original NVD 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.