CVE-2026-53720
Severity not reportedData quality: partial.
Some fields were not provided by the source.
pymonocypher uses cython to wrap the Monocypher C library.
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.
CVSS
—
Not reported by the source
Timeline (UTC)
Published: 2026-09-03 16:17
Modified: 2026-09-09 21:09
NVD status: Deferred
Last synced 2 days ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/jetperch/pymonocypher/commit/90ff5b13b13b5673c372e188f482d8c172e6ab86 security-advisories@github.com
- https://github.com/jetperch/pymonocypher/releases/tag/v4.0.2.8 security-advisories@github.com
- https://github.com/jetperch/pymonocypher/security/advisories/GHSA-8f95-v3jq-cj86 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗