JLSEC-2026-108 Deno's AES GCM authentication tags are not verified

Summary This affects AES-256-GCM and AES-128-GCM in Deno, introduced by commit 0d1beed. Specifically, the authentication tag is not being validated. This means tampered ciphertexts or incorrect keys might not be detected, which breaks the guarantees expected from AES-GCM. Older versions of Deno...

CVE-2021-41641

Deno =1.14.0 file sandbox does not handle symbolic links correctly. When running Deno with specific write access, the Deno.symlink method can be used to gain access to any directory...

EUVD-2023-1121

Malicious code in bioql PyPI...

EUVD-2025-16794

Malicious code in bioql PyPI...

GHSA-8VXJ-4CPH-C596 Deno has --allow-read / --allow-write permission bypass in `node:sqlite`

Summary It is possible to bypass Deno's read/write permission checks by using ATTACH DATABASE statement. PoC js // poc.js import DatabaseSync from "node:sqlite" const db = new DatabaseSync":memory:"; db.exec"ATTACH DATABASE 'test.db' as test;"; db.exec"CREATE TABLE test.test id INTEGER PRIMARY KE...

CVE-2025-48934 Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the Deno.env.toObject method ignores any variables listed in the --deny-env option of the deno run command. When looking at the documentation of the --deny-env option this might lead to a false...

CVE-2024-34346

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading /proc/self/environ may provide access...