1. Home
  2. CVE Database
  3. CVE-2026-44983
HIGH · 7.3

CVE-2026-44983

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 allocatio...

Vulnerability 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.

CVSS Score

7.3

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
HIGH

Related Weaknesses (CWE)

CWE-122CWE-190

References

FAQ

What is CVE-2026-44983?

CVE-2026-44983 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 allocatio...

How severe is CVE-2026-44983?

CVE-2026-44983 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-44983?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.