CVE-2026-44726

CVE-2026-44726 affects Deno (2.0.0–2.7.8) via the Node.js tls compatibility layer. When autoSelectFamily is enabled and the first address-family attempt fails, the socket reinitialization path reuses a stale TLS upgrade hook tied to the original failed handle, causing the replacement TCP connecti...

CVE-2026-41690

18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Versions prior to 3.9.3 allow an unauthenticated HTTP client to pollute Object.prototype in the Node.js process hosting the middleware, via two unvalidated entry points that...

JLSEC-2026-101

Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service ReDoS due to the upgradeWebSocket function, which contains regexes in the form of /s,s/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to...

JLSEC-2026-109 Deno run with --allow-read and --deny-read flags results in allowed

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 give...

JLSEC-2026-102 Interactive `run` permission prompt spoofing via improper ANSI neutralization

Summary Arbitrary program names without any ANSI filtering allows any malicious program to clear the first 2 lines of a opspawnchild or opkill prompt and replace it with any desired text. Details The main entry point comes down to the ability to override what the API control says 40process.js...

CVE-2026-32260

Summary: CVE-2026-32260 affects Deno’s node:child_process polyfill (shell: true mode). From 2.7.0 to 2.7.1, a two-stage argument sanitization in transformDenoShellCommand contains a priority bug: when an argument includes a $VAR pattern, it is wrapped in double quotes instead of single quotes. Th...

Iran-Linked MuddyWater Hackers Target U.S. Networks With New Dindoor Backdoor

New research from Broadcom's Symantec and Carbon Black Threat Hunter Team has discovered evidence of an Iranian hacking group embedding itself in several U.S. companies' networks, including banks, airports, non-profit, and the Israeli arm of a software company. The activity has been attributed to...

CVE-2026-27190

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.6.8, a command injection vulnerability exists in Deno's node:childprocess implementation. This vulnerability is fixed in 2.6.8...

CVE-2026-27190

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.6.8, a command injection vulnerability exists in Deno's node:childprocess implementation. This vulnerability is fixed in 2.6.8...

CVE-2026-27190

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.6.8, a command injection vulnerability exists in Deno's node:childprocess implementation. This vulnerability is fixed in 2.6.8...

CVE-2026-22863

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.6.0, node:crypto doesn't finalize cipher. The vulnerability allows an attacker to have infinite encryptions. This can lead to naive attempts at brute forcing, as well as more refined attacks with the goal to learn the server...

CVE-2026-22863

Deno before 2.6.0 is affected: node:crypto does not finalize the cipher, enabling an attacker to generate an unlimited number of encryptions and potentially mount brute‑force/secret‑learning attempts. The issue impacts cryptographic operations that could reveal server secrets; exploitation is des...

PT-2026-3146

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.5.6 Description Deno is a JavaScript, TypeScript, and WebAssembly runtime. A previous attempt to prevent the execution of Windows batch and shell files by checking file extensions .bat or .cmd was ineffective due to a...

CVE-2025-61786

Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, Deno.FsFile.prototype.stat and Deno.FsFile.prototype.statSync are not limited by the permission model check --deny-read=./. It's possible to retrieve stats from files that the user do not have explic...

CVE-2025-61786 Deno's --deny-read check does not prevent permission bypass

Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, Deno.FsFile.prototype.stat and Deno.FsFile.prototype.statSync are not limited by the permission model check --deny-read=./. It's possible to retrieve stats from files that the user do not have explic...

CVE-2025-61786

Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, Deno.FsFile.prototype.stat and Deno.FsFile.prototype.statSync are not limited by the permission model check --deny-read=./. It's possible to retrieve stats from files that the user do not have explic...

Deno 安全漏洞

Deno is a simple, modern and secure JavaScript and TypeScript runtime environment from Deno Open Source. A security vulnerability exists in Deno versions prior to 2.5.3 and prior to 2.2.15, which stems from the fact that the utime and utimeSync methods are not constrained by the privilege model,...

PT-2025-41209

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.5.3 Deno versions prior to 2.2.15 Description Deno is a JavaScript, TypeScript, and WebAssembly runtime. The Deno.FsFile.prototype.stat and Deno.FsFile.prototype.statSync functions do not enforce the --deny-read=./...

PT-2025-41208

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.5.3 Deno versions prior to 2.2.15 Description Deno is a JavaScript, TypeScript, and WebAssembly runtime. The Deno.FsFile.prototype.utime and Deno.FsFile.prototype.utimeSync functions are not limited by the...

EUVD-2021-2134

Malware in sbrugna...