CVE-2026-44983

HighCVSS 7.3/10Last modified Jul 24, 2026

Description

smallbitvec is a growable bit-vector for Rust, optimized for size. From 1.0.1 to 2.6.0, an integer overflow in the internal capacity calculation of smallbitvec can lead to an undersized heap allocation, resulting in a heap buffer overflow through safe APIs only. This allows memory corruption without requiring unsafe code from the caller. This vulnerability is fixed in 2.6.1.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Weakness enumeration

CWE-122 CWE-190

Affected software

No affected versions have been published.

Timeline

Published: May 26, 2026
Last modified: Jul 24, 2026
NVD status: Deferred

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