{"id":"EUVD-2026-83362","revision":null,"records":[{"revision":"f9e95ea3bd2f4f67af8b79c1412e90b5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92708","aliases":[],"title":"devalue: Cross-request process memory disclosure in devalue when `stringify`\u00A0/\u00A0`uneval` serialize Node Buffers","description":"Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire backing ArrayBuffer rather than only the view, so serializing a Node Buffer, whose backing store is a process-wide shared pool, discloses up to 64 KB of unrelated process memory, including bytes from other in-flight requests. In a server-side-rendered framework such as SvelteKit or Nuxt, a public page whose load() returns a small Buffer, or that reads a small file, can therefore ship another user's request body or Authorization header in its HTML without authentication. Because this occurs during serialization, it fires on every such render and is not mitigated by the parse/unflatten prototype-pollution and denial-of-service guards, which only apply when parsing untrusted input. As a workaround, convert Node Buffer objects to Uint8Array before serialization. This issue has been fixed in version 5.9.3.","state":0,"publishedAt":"2026-09-18T19:54:28.335+00:00","modifiedAt":"2026-09-23T19:38:36.551+00:00","affected":[{"ecosystem":"Vendor product","name":"devalue","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sveltejs\",\n                    \"product\": \"devalue\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 5.1.0, < 5.9.3\",\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:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/sveltejs/devalue/security/advisories/GHSA-j22f-vq7h-c4qm","https://github.com/sveltejs/devalue/commit/46dc877b3570dafb1cd3291b9bb48cecef8f7266","https://github.com/sveltejs/devalue/releases/tag/v5.9.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92708","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92708","identifiers":["CVE-2026-92708"]},"retained":false,"historicalAffected":[]},{"revision":"b8ec2caec8a543e2ba9233e0d0edff47","observedAt":"2026-11-11T17:05:03.185+00:00","statement":{"source":"euvd","id":"EUVD-2026-83362","aliases":["CVE-2026-92708","GHSA-j22f-vq7h-c4qm"],"title":"Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire back…","description":"Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire backing ArrayBuffer rather than only the view, so serializing a Node Buffer, whose backing store is a process-wide shared pool, discloses up to 64 KB of unrelated process memory, including bytes from other in-flight requests. In a server-side-rendered framework such as SvelteKit or Nuxt, a public page whose load() returns a small Buffer, or that reads a small file, can therefore ship another user's request body or Authorization header in its HTML without authentication. Because this occurs during serialization, it fires on every such render and is not mitigated by the parse/unflatten prototype-pollution and denial-of-service guards, which only apply when parsing untrusted input. As a workaround, convert Node Buffer objects to Uint8Array before serialization. This issue has been fixed in version 5.9.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":null}],"references":["https://github.com/sveltejs/devalue/security/advisories/GHSA-j22f-vq7h-c4qm","https://github.com/sveltejs/devalue/commit/46dc877b3570dafb1cd3291b9bb48cecef8f7266","https://github.com/sveltejs/devalue/releases/tag/v5.9.3"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-83362","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 18, 2026, 7:54:28 PM","dateUpdated":"Sep 23, 2026, 7:38:36 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-83362","identifiers":["EUVD-2026-83362","CVE-2026-92708","GHSA-j22f-vq7h-c4qm"]},"retained":false,"historicalAffected":[]},{"revision":"1c8eb10136484818b208e0f5a3e931bb","observedAt":"2026-10-25T16:19:22.228+00:00","statement":{"source":"nvd","id":"CVE-2026-92708","aliases":[],"title":"Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire back…","description":"Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire backing ArrayBuffer rather than only the view, so serializing a Node Buffer, whose backing store is a process-wide shared pool, discloses up to 64 KB of unrelated process memory, including bytes from other in-flight requests. In a server-side-rendered framework such as SvelteKit or Nuxt, a public page whose load() returns a small Buffer, or that reads a small file, can therefore ship another user's request body or Authorization header in its HTML without authentication. Because this occurs during serialization, it fires on every such render and is not mitigated by the parse/unflatten prototype-pollution and denial-of-service guards, which only apply when parsing untrusted input. As a workaround, convert Node Buffer objects to Uint8Array before serialization. This issue has been fixed in version 5.9.3.","state":0,"publishedAt":"2026-09-18T20:17:30.15+00:00","modifiedAt":"2026-09-23T20:17:22.253+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/sveltejs/devalue/commit/46dc877b3570dafb1cd3291b9bb48cecef8f7266","https://github.com/sveltejs/devalue/releases/tag/v5.9.3","https://github.com/sveltejs/devalue/security/advisories/GHSA-j22f-vq7h-c4qm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92708","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-200","CWE-226"],"productCriteria":[],"sourceDates":{"published":"2026-09-18T20:17:30.150","lastModified":"2026-09-23T20:17:22.253"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-92708","identifiers":["CVE-2026-92708"]},"retained":false,"historicalAffected":[]},{"revision":"804bc21652ef4fdaac9701d94e171c1e","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-j22f-vq7h-c4qm","aliases":["CVE-2026-92708"],"title":"devalue: `stringify`/`uneval` serialize shared memory","description":"### Impact\n\n`stringify` and `uneval` serialize a typed array by emitting its backing `ArrayBuffer`, not just the view. In the case of a Node `Buffer` object, the backing buffer is a process-wide shared pool, meaning unrelated memory can be serialized into a response that is then sent to the client. For a Node `Buffer` the backing store is Node's **process-wide shared pool**, so serializing a small `Buffer` copies up to 64 KB of unrelated process memory — including bytes from other in-flight requests — into the output. In an SSR framework (SvelteKit, Nuxt) a public page whose `load()` returns a 2-byte `Buffer`, or a small file read with `readFileSync`, ships another user's request body / `Authorization` header in its HTML. Unauthenticated, silent, ~43,000× amplification.\n\nThis is serialization-side, so the `parse`/`unflatten` prototype-pollution and DoS guards do not apply — it fires on every SSR render, not only when parsing untrusted input.\n\n### Workarounds\n\nConvert Node `Buffer` objects to `Uint8Array`:\n\n```diff\npayload = {\n- buffer\n+ buffer: new Uint8Array(buffer)\n}\n```","state":0,"publishedAt":"2026-10-01T15:18:06+00:00","modifiedAt":"2026-10-01T15:30:12.6787574+00:00","affected":[{"ecosystem":"npm","name":"devalue","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"5.1.0"},{"kind":"fixed","version":"5.9.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/sveltejs/devalue/security/advisories/GHSA-j22f-vq7h-c4qm","https://nvd.nist.gov/vuln/detail/CVE-2026-92708","https://github.com/sveltejs/devalue/commit/46dc877b3570dafb1cd3291b9bb48cecef8f7266","https://github.com/sveltejs/devalue","https://github.com/sveltejs/devalue/releases/tag/v5.9.3"],"sourceUrl":"https://github.com/advisories/GHSA-j22f-vq7h-c4qm","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-j22f-vq7h-c4qm","identifiers":["GHSA-j22f-vq7h-c4qm","CVE-2026-92708"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-11T22:56:48.8843611+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-11T22:56:48.8843611+00:00","lastSuccessAt":"2026-11-11T22:56:49.05921+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:49.0592109+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-de3b77103708811b6494d2ff7c979037d73ae579742cd1649a5c765137ae5083-898e28488849fdb15ef1568d1126b1e135cc449eeb5b00fe8f5e0e94343c0306","complete":true,"records":424438,"lastAttemptAt":"2026-11-11T22:56:48.5548519+00:00","lastSuccessAt":"2026-11-11T22:56:48.275736+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.5548519+00:00","snapshotPublishedAt":"2026-11-11T22:23:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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Not a global EPSS backfill.","generation":"2026-11-11T22:56:48.8843611+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T22:56:48.8843611+00:00","lastSuccessAt":"2026-11-11T22:56:49.0602607+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:49.0602611+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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