CVE-2026-44983

HIGH EPSS 4.7%
Published May 26, 20261mo ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
High
Find Similar
Published May 26, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.3
Exploitability
2.5
Impact
4.7
Vector string
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

Threat Intelligence

EPSS Exploit Probability
4.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-122
CWE-190 Integer Overflow or Wraparound Numeric Error

References 1

  • github.com https://github.com/servo/smallbitvec/security/advisories/GHSA-97wc-2hqc-cjgr

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.