{"id":"CVE-2026-44375","revision":"bd71ef5dc69b4f8d8e4a6cdc84e84659","records":[{"revision":"bd71ef5dc69b4f8d8e4a6cdc84e84659","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-44375","aliases":[],"title":"Nerdbank.MessagePack: Attacker-controlled stackalloc in DateTime decoding causes process-terminating StackOverflowException","description":"Nerdbank.MessagePack is a NativeAOT-compatible MessagePack serialization library. Prior to 1.1.62, Nerdbank.MessagePack contains an uncontrolled stack allocation vulnerability in DateTime decoding. A malicious MessagePack payload can declare an oversized timestamp extension length, causing the reader to allocate an attacker-controlled number of bytes on the stack. This can trigger a StackOverflowException, which is not catchable by user code and terminates the process. This vulnerability is fixed in 1.1.62.","state":0,"publishedAt":"2026-05-14T14:32:09.506+00:00","modifiedAt":"2026-05-14T16:02:12.327+00:00","affected":[{"ecosystem":"Vendor product","name":"Nerdbank.MessagePack","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AArnott\",\n                    \"product\": \"Nerdbank.MessagePack\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.1.62\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/AArnott/Nerdbank.MessagePack/security/advisories/GHSA-2cwq-pwfr-wcw3","https://github.com/AArnott/Nerdbank.MessagePack/pull/941","https://github.com/AArnott/Nerdbank.MessagePack/commit/7d1eb319cfabe7280e70699946c9a48579fa2f30","https://github.com/AArnott/Nerdbank.MessagePack/releases/tag/v1.1.62"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-44375","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-44375","identifiers":["CVE-2026-44375"]},"retained":false,"historicalAffected":[]}],"coverage":[]}