{"affected":[{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"devalue","product":"devalue","source":"CNA: VulnCheck","vendor":"sveltejs","versions":[{"lessThan":"5.9.3","status":"affected","version":"5.8.0","versionType":"semver"},{"status":"unaffected","version":"5.9.3","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"devalue","product":"devalue","source":"OSV GHSA-x5rw-q4pp-hg5g","vendor":"","versions":[{"events":[{"introduced":"5.8.0"},{"fixed":"5.9.3"}],"lessThan":"5.9.3","status":"affected","version":"5.8.0","versionType":"semver"}]}],"cveId":"CVE-2026-123562","cwes":["CWE-248"],"description":"devalue (sveltejs/devalue) 5.8.0 before 5.9.3 contains an unhandled promise rejection in stringifyAsync: when serializing multiple promises, a later promise rejecting before an earlier one settles leaves an internal rejection unhandled, even if the caller catches the returned promise. An attacker able to influence the timing or failure of serialized asynchronous values can terminate the Node.js process.","epss":{"date":"2026-11-08","percentile":0.28072,"score":0.00343},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","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","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794232447297,"publishedAt":1794101882433,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/sveltejs/devalue/security/advisories/GHSA-x5rw-q4pp-hg5g"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/devalue-5.8.0-before-5.9.3-denial-of-service-via-stringifyasync-unhandled-rejection"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/sveltejs/devalue/security/advisories/GHSA-x5rw-q4pp-hg5g"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/devalue-5.8.0-before-5.9.3-denial-of-service-via-stringifyasync-unhandled-rejection"},{"source":"OSV / GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/advisories/GHSA-x5rw-q4pp-hg5g"},{"source":"OSV / GitHub Security Advisories","tags":["osv"],"url":"https://osv.dev/vulnerability/GHSA-x5rw-q4pp-hg5g"}],"remediation":[{"kind":"fix","source":"OSV GHSA-x5rw-q4pp-hg5g","text":"devalue (npm): OSV reports a fixed version 5.9.3. Check the advisory for supported release branches.","url":"https://github.com/advisories/GHSA-x5rw-q4pp-hg5g"}],"revision":"c8efea28ddfe3d7462dcf66bb617a52a17685805ca0dcc653138930c2cc37fdd","sources":[{"modifiedAt":1794232447297,"name":"CNA: VulnCheck","retrievedAt":1794233354894,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123562"},{"modifiedAt":1794104208567,"name":"NVD","retrievedAt":1794118575245,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123562"},{"modifiedAt":1794135371899,"name":"OSV / GitHub Security Advisories","retrievedAt":1794233355378,"url":"https://osv.dev/vulnerability/GHSA-x5rw-q4pp-hg5g"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794233356397,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123562"}],"ssvc":{"assessedAt":1794232437198,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Devalue 5.8.0 before 5.9.3 Denial of Service via stringifyAsync Unhandled Rejection","updatedAt":1794233356397}