CVE-2026-40943
High
Description
Oxia is a metadata store and coordination system. Prior to 0.16.2, a race condition between session heartbeat processing and session closure can cause the server to panic with send on closed channel. The heartbeat() method uses a blocking channel send while holding a mutex, and under specific timing with concurrent close() calls, this can lead to either a deadlock (channel buffer full) or a panic (send on closed channel after TOCTOU gap in KeepAlive). This vulnerability is fixed in 0.16.2.
SeverityHigh
CVSS8.7
Exploit probability—
ProductGithub.com/oxia-db/oxia
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-362Race condition
How to fix
Update
- github.com/oxia-db/oxia0.16.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/oxia-db/oxiaGo | v < 0.16.2 | 0.16.2 |
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