{"cve":"CVE-2026-40943","nvd":{"published":"2026-04-21T22:16:19.847","modified":"2026-06-17T10:45:55.210","status":"Deferred","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_v4":{"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","score":8.7},"cvss_v3":null,"cwes":["CWE-362"],"references":["https://github.com/oxia-db/oxia/security/advisories/GHSA-5gqc-qhrj-9xw8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-40943","score":0.00202,"percentile":0.10115,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5gqc-qhrj-9xw8","url":"https://osv.dev/vulnerability/GHSA-5gqc-qhrj-9xw8","summary":"Oxia affected by server crash via race condition in session heartbeat handling","modified":"2026-06-25T18:56:16.518918280Z","packages":[{"ecosystem":"Go","name":"github.com/oxia-db/oxia","purl":"pkg:golang/github.com/oxia-db/oxia","ranges":["<0.16.2"],"fixed":["0.16.2"]}]},{"id":"GO-2026-5145","url":"https://osv.dev/vulnerability/GO-2026-5145","summary":"Oxia affected by server crash via race condition in session heartbeat handling in github.com/oxia-db/oxia","modified":"2026-06-25T18:45:26.451410433Z","packages":[{"ecosystem":"Go","name":"github.com/oxia-db/oxia","purl":"pkg:golang/github.com/oxia-db/oxia","ranges":["<0.16.2"],"fixed":["0.16.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}