{"action":"Upgrade MessagePack to 3.1.7 or later.","affected":[{"fixed":"3.1.7","introduced":"3.0"}],"component":"MessagePack","cve_ids":["CVE-2026-48502"],"ecosystem":"NuGet","epss":0.00437,"exploited":false,"fixed_versions":["3.1.7"],"ghsa_id":"GHSA-382j-8mxh-c7x2","id":"tcs_01M5N86GXKFR3S3NGCZ5S4C6SZ","modified_at":"2026-06-25T18:56:39.155926Z","published_at":"2026-06-25T18:35:48Z","references":["https://osv.dev/vulnerability/GHSA-382j-8mxh-c7x2","https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-382j-8mxh-c7x2","https://nvd.nist.gov/vuln/detail/CVE-2026-48502","https://github.com/MessagePack-CSharp/MessagePack-CSharp"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-382j-8mxh-c7x2","url":"https://osv.dev/vulnerability/GHSA-382j-8mxh-c7x2"},{"source":"nvd","source_id":"CVE-2026-48502","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48502"}],"summary":"MessagePack-CSharp: Denial of service vulnerabilities can swamp the CPU or crash the process with stack and heap overflows"}