Oxia: Server crash via race condition in session heartbeat handling_CVE-2026-40943

{
    "lastseen": "",
    "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.",
    "published": "2026-04-21T21:13:31.675Z",
    "modified": "2026-04-21T21:13:31.675Z",
    "type": "cve",
    "title": "Oxia: Server crash via race condition in session heartbeat handling",
    "source": "GitHub_M",
    "references": "https://github.com/oxia-db/oxia/security/advisories/GHSA-5gqc-qhrj-9xw8",
    "id": "CVE-2026-40943",
    "bulletinFamily": "",
    "cwe": [
        "CWE-362"
    ],
    "cvelist": null,
    "sourceData": "oxia-db oxia < 0.16.2",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "oxia",
    "version": "< 0.16.2",
    "vendor": "oxia-db",
    "ai_description": "Server crash via race condition in session heartbeat handling",
    "ai_severity": "High",
    "ai_vendor": "oxia-db",
    "ai_product": "Oxia",
    "ai_version": "< 0.16.2",
    "ai_score": 8.7
}