CVSS 3.1
7.3 highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HCVE-2026-44983
High (7.3). EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-122, CWE-190
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-97wc-2hqc-cjgr | crates.io | smallbitvec | >=1.0.1 <=2.6.0 | no fix published |