{"id":"EUVD-2026-93973","revision":"f46c2451023b47b08676da34dd49fccb","records":[{"revision":"f46c2451023b47b08676da34dd49fccb","observedAt":"2026-11-03T03:00:38.108+00:00","statement":{"source":"euvd","id":"EUVD-2026-93973","aliases":["CVE-2026-106448"],"title":"StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates ordinary JavaScript objects and assigns attacker-controlled keys with bracket assignment. A map key n…","description":"StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates ordinary JavaScript objects and assigns attacker-controlled keys with bracket assignment. A map key named __proto__ invokes the inherited prototype setter instead of creating an ordinary own property, allowing the decoded object's prototype to contain attacker-controlled authorization or feature-flag values. Downstream code that trusts normal property lookup or merges the decoded object can therefore make security-sensitive decisions using inherited attacker data. This issue is fixed in version 2.0.4.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":8.9,"severity":null}],"references":["https://github.com/StableLib/stablelib/security/advisories/GHSA-w48f-fwg7-ww6p","https://github.com/StableLib/stablelib/commit/0f153a63b7552a0e8721f640984113e419015026","https://github.com/StableLib/stablelib/releases/tag/@stablelib/cbor@2.0.4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93973","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 6, 2026, 7:45:02 PM","dateUpdated":"Oct 7, 2026, 5:07:38 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-2026-93973","identifiers":["EUVD-2026-93973","CVE-2026-106448"]},"retained":false,"historicalAffected":[]}],"coverage":[]}