Vulnerability details
CVE-2026-40943
oxia-db oxia
Oxia: Server crash via race condition in session heartbeat handling
CVSS 4.0
8.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| oxia-db | oxia | < 0.16.2 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/oxia-db/oxia/security/advisories/GHSA-5gqc-qhrj-9xw8 x_refsource_CONFIRM
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Details
- Published
- 2026-04-22
- Last updated
- 2026-04-22
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.2%
Probability of exploitation in 30 days
10.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')