CVE-2026-40943

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-40943
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40943.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40943
Aliases
Published
2026-04-21T21:13:31.675Z
Modified
2026-07-15T01:49:17.161986709Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Oxia: Server crash via race condition in session heartbeat handling
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-362"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40943.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/oxia-db/oxia

Affected ranges

Type
GIT
Repo
https://github.com/oxia-db/oxia
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
980fa7ddfaadac27e87f41bec81840de6af00adb
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.16.2"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

common/v0.*
common/v0.15.0
common/v0.16.0
common/v0.16.1
oxia/v0.*
oxia/v0.15.0
oxia/v0.16.0
oxia/v0.16.1
v0.*
v0.1.0
v0.10.0
v0.11.0
v0.11.1
v0.11.10
v0.11.11
v0.11.12
v0.11.13
v0.11.14
v0.11.15
v0.11.16
v0.11.2
v0.11.3
v0.11.4
v0.11.5
v0.11.6
v0.11.7
v0.11.8
v0.11.9
v0.12.0
v0.13.0
v0.13.1
v0.13.2
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.14.4
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.15.3-rc0
v0.15.3-rc2
v0.15.3-rc3
v0.16.0
v0.16.1
v0.2.0
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v0.8.0
v0.9.0
v0.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40943.json"