CVE-2026-40943: high-severity vulnerability in oxia-db oxia
Oxia: Server crash via race condition in session heartbeat handling
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.2%
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: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
oxia-db · oxiaRelated CVEs — oxia-db oxia
In the same product, most dangerous first.
CVE-2026-40945HIGHOxia: Bearer token exposed in debug log messages on authentication failureEPSS 0.3%CVE-2026-40946CRITICALOxia: OIDC token audience validation bypass via SkipClientIDCheckEPSS 0.3%CVE-2026-40944MEDIUMOxia: TLS CA certificate chain validation fails with multi-certificate PEM bundlesEPSS 0.2%