JLSEC-2026-657 Deno: BYONM module resolution allows `package.json` main path traversal to bypass `--allow-read` restrictions

Summary When Deno was run in BYONM mode nodeModulesDir: "manual", the module resolver did not validate that a package's resolved entrypoint stayed within its nodemodules// directory. A malicious package.json whose main field contained .. segments was able to resolve to an arbitrary path on disk,...

PT-2026-50147

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.7.12 Description When running in BYONM mode nodeModulesDir: "manual", the module resolver fails to validate that a package's resolved entrypoint remains within its node modules// directory. A malicious package.json...