What is CVE-2026-46690?

CVE-2026-46690 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.8/10. Published 2026-06-12.

How severe is CVE-2026-46690?

Medium severity. CVSS v3 base score is 5.8 out of 10.

CVE-2026-46690

CVE-2026-46690

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 availa…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read
CWE-415 — Double Free
CWE-704 — Incorrect Type Conversion or Cast
CWE-787 — Out-of-bounds Write

References

security-advisories@github.com

Frequently asked questions

What is CVE-2026-46690?: CVE-2026-46690 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.8/10. Published 2026-06-12.
How severe is CVE-2026-46690?: Medium severity. CVSS v3 base score is 5.8 out of 10.