{"cve":"CVE-2026-107726","nvd":{"published":"2026-10-08T22:17:29.120","modified":"2026-10-09T16:35:35.900","status":"Awaiting Analysis","description":"Hazelcast is a unified real-time data platform combining stream processing with a fast data store. Prior to 5.4.5, 5.5.10, and 5.6.1, improper validation of data supplied by a malicious client able to connect to a cluster allows arbitrary reads from a cluster member's Java heap, off-heap data, and JVM process address space. The same flaw can crash cluster members and, in some Hazelcast Enterprise Edition configurations, corrupt memory with possible arbitrary code execution. Both slim and full distributions are affected. This issue is fixed in versions 5.4.5, 5.5.10, 5.6.1, and 5.7.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":null,"cwes":["CWE-20"],"references":["https://docs.hazelcast.com/hazelcast/5.7/release-notes/community","https://docs.hazelcast.com/hazelcast/5.7/release-notes/enterprise","https://github.com/hazelcast/hazelcast/commit/361979da12f18950c24719db832ca6c5e7c0534f","https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0","https://github.com/hazelcast/hazelcast/security/advisories/GHSA-6v25-8wq6-xq4j"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-107726","score":0.00383,"percentile":0.32113,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-6v25-8wq6-xq4j","url":"https://osv.dev/vulnerability/GHSA-6v25-8wq6-xq4j","summary":"Hazelcast allows arbitrary member memory access by low-privileged client","modified":"2026-10-08T22:30:20.189525309Z","packages":[{"ecosystem":"Maven","name":"com.hazelcast:hazelcast","purl":"pkg:maven/com.hazelcast/hazelcast","ranges":[">=5.6.0 <5.7.0"],"fixed":["5.7.0"]},{"ecosystem":"Maven","name":"com.hazelcast:hazelcast","purl":"pkg:maven/com.hazelcast/hazelcast","ranges":[">=5.5.0 <5.7.0"],"fixed":["5.7.0"]},{"ecosystem":"Maven","name":"com.hazelcast:hazelcast","purl":"pkg:maven/com.hazelcast/hazelcast","ranges":["<5.7.0"],"fixed":["5.7.0"]}]}],"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."]}