# CVE-2026-46690

## Summary

- **CVE ID:** CVE-2026-46690
- **Severity:** MEDIUM
- **CVSS Score:** 5.8 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H)
- **CWE:** CWE-125, CWE-415, CWE-704, CWE-787
- **Published:** Jun 12, 2026
- **Last Modified:** Jun 12, 2026

## Description

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.

## Affected Products

- spearman — unbounded-spsc (<= 0.2.0)

## References

- [CNA](https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 3.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._