CVE-2026-40943
Race condition in Oxia heartbeat can panic or deadlock; fixed in 0.16.2.
Is CVE-2026-40943 being exploited?
Not confirmed. CVE-2026-40943 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-40943?
CVE-2026-40943 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-40943?
Yes. A fix has been recorded for CVE-2026-40943. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-40943 affect?
CVE-2026-40943 affects Oxia metadata store (<0.16.2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-40943?
Upgrade to 0.16.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Race between heartbeat processing and session close can panic or deadlock the server, causing DoS.
Patch when possible
- affected< 0.16.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.