{"id":"EUVD-2026-38543","revision":"5ef168ea0a1e462aa88ee5e9574e264c","records":[{"revision":"5ef168ea0a1e462aa88ee5e9574e264c","observedAt":"2026-11-03T10:01:47.976+00:00","statement":{"source":"euvd","id":"EUVD-2026-38543","aliases":["CVE-2026-49983","GHSA-4c8g-jvcx-v4hv"],"title":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, environment access is gated by the env permission. You can deny it with --deny-env, or restrict it to a specific allowlist with --allow-env=FOO,BAR. The expectation …","description":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, environment access is gated by the env permission. You can deny it with --deny-env, or restrict it to a specific allowlist with --allow-env=FOO,BAR. The expectation is that a program running without env permission cannot change process.env. process.loadEnvFile() (the Node-compatible API for loading variables from a .env file) does not honor this. It only checks that the program has read permission for the dotenv file, then writes every key in that file into the process environment — even when env access is denied. In effect, --allow-read plus a writable or attacker-controlled .env file is enough to defeat --deny-env. This vulnerability is fixed in 2.8.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":5.2,"severity":null}],"references":["https://github.com/denoland/deno/security/advisories/GHSA-4c8g-jvcx-v4hv"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38543","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 23, 2026, 5:16:17 PM","dateUpdated":"Jun 23, 2026, 5:54:51 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-2026-38543","identifiers":["EUVD-2026-38543","CVE-2026-49983","GHSA-4c8g-jvcx-v4hv"]},"retained":false,"historicalAffected":[]}],"coverage":[]}