GHSA-5gqc-qhrj-9xw8
High · 7.5Oxia affected by server crash via race condition in session heartbeat handling
CVSS
7.5
EPSS
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Published
Apr 14, 2026
CISA due date
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The record
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`).
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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