CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-48934 – Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables
https://notcve.org/view.php?id=CVE-2025-48934
04 Jun 2025 — 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 impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable ... • https://docs.deno.com/api/deno/~/Deno.Env.toObject • CWE-201: Insertion of Sensitive Information Into Sent Data •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2025-48888 – Deno run with --allow-read and --deny-read flags results in allowed
https://notcve.org/view.php?id=CVE-2025-48888
04 Jun 2025 — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.41.3 and prior to versions 2.1.13, 2.2.13, and 2.3.2, `deno run --allow-read --deny-read main.ts` results in allowed, even though 'deny' should be stronger. The result is the same with all global unary permissions given as `--allow-* --deny-*`. This only affects a nonsensical combination of flags, so there shouldn't be a real impact on the userbase. Users may upgrade to version 2.1.13, 2.2.13, or 2.3.2 to receive a patch. • https://github.com/denoland/deno/commit/2f0fae9d9071dcaf0a689bc7097584b1b9ebc8db • CWE-863: Incorrect Authorization •
CVSS: 7.7EPSS: 0%CPEs: 1EXPL: 0CVE-2025-24015 – Deno's AES GCM authentication tags are not verified
https://notcve.org/view.php?id=CVE-2025-24015
03 Jun 2025 — Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Versions 1.46.0 through 2.1.6 have an issue that affects AES-256-GCM and AES-128-GCM in Deno in which 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 correctly threw errors in such cases, as does Node.js. Without authentication tag verification, AES-GCM degrades to essentially CTR mode... • https://github.com/denoland/deno/commit/0d1beed • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2025-21620 – Deno's authorization headers not dropped when redirecting cross-origin
https://notcve.org/view.php?id=CVE-2025-21620
06 Jan 2025 — Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. When you send a request with the Authorization header to one domain, and the response asks to redirect to a different domain, Deno'sfetch() redirect handling creates a follow-up redirect request that keeps the original Authorization header, leaking its content to that second domain. This vulnerability is fixed in 2.1.2. Deno es un entorno de ejecución de JavaScript, TypeScript y WebAssembly con valores predeterminados seguros. C... • https://github.com/denoland/deno/security/advisories/GHSA-f27p-cmv8-xhm6 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2024-32468 – Improper neutralization of input during web page generation ("Cross-site Scripting") in deno_doc HTML generator
https://notcve.org/view.php?id=CVE-2024-32468
25 Nov 2024 — Deno is a runtime for JavaScript and TypeScript written in rust. Several cross-site scripting vulnerabilities existed in the `deno_doc` crate which lead to Self-XSS with deno doc --html. 1.) XSS in generated `search_index.js`, `deno_doc` outputs a JavaScript file for searching. However, the generated file used `innerHTML` on unsanitzed HTML input. 2.) XSS via property, method and enum names, `deno_doc` did not sanitize property names, method names and enum names. • https://github.com/denoland/deno/security/advisories/GHSA-qqwr-j9mm-fhw6 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2024-37150 – Private npm registry support used scope auth token for downloading tarballs
https://notcve.org/view.php?id=CVE-2024-37150
06 Jun 2024 — An issue in `.npmrc` support in Deno 1.44.0 was discovered where Deno would send `.npmrc` credentials for the scope to the tarball URL when the registry provided URLs for a tarball on a different domain. All users relying on .npmrc are potentially affected by this vulnerability if their private registry references tarball URLs at a different domain. This includes usage of deno install subcommand, auto-install for npm: specifiers and LSP usage. It is recommended to upgrade to Deno 1.44.1 and if your private ... • https://github.com/denoland/deno/commit/566adb7c0a0c0845e90a6e867a2c0ef5d2ada575 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 8.4EPSS: 0%CPEs: 1EXPL: 0CVE-2024-34346 – Deno contains a permission escalation via open of privileged files with missing `--deny` flag
https://notcve.org/view.php?id=CVE-2024-34346
07 May 2024 — 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 equivalent to `--allow-env`, and writing `/proc/self/mem` may provide access equivalent to `--allow-all`. Users who grant read and write access to the entire filesystem may not realize that these access to these files ... • https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w • CWE-863: Incorrect Authorization •
CVSS: 7.7EPSS: 0%CPEs: 1EXPL: 0CVE-2024-32477 – Race condition when flushing input stream leads to permission prompt bypass
https://notcve.org/view.php?id=CVE-2024-32477
18 Apr 2024 — Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. By using ANSI escape sequences and a race between `libc::tcflush(0, libc::TCIFLUSH)` and reading standard input, it's possible to manipulate the permission prompt and force it to allow an unsafe action regardless of the user input. Some ANSI escape sequences act as a info request to the master terminal emulator and the terminal emulator sends back the reply in the PTY channel. standard streams also use this channel to send and g... • https://github.com/denoland/deno/security/advisories/GHSA-95cj-3hr2-7j5j • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •