CVE-2026-46690

EUVD-2026-36469
unbounded_spsc is an "unbounded" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.8 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Common Weakness Enumeration
References
https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6
https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6