Deno
CVE-2024-27933
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A local attacker with access to the system could bypass authorization checks to access restricted resources. |
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Alert meAnalysisAI
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in cargo
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. Deno is a JavaScript, TypeScript, and WebAssembly runtime. In version 1.39.0, use of raw file descriptors in op_node_ipc_pipe() leads to premature close of arbitrary file descriptors, allowing standard input to be re-opened as a different resource resulting in permission prompt bypass. Node child_process IPC relies on the JS side to pass the raw IPC file descriptor to op_node_ipc_pipe(), which returns a IpcJsonStreamResource ID associated with the file descriptor. On closing the resource, the raw file descriptor is closed together. Use of raw file descriptors in op_node_ipc_pipe() leads to premature close of arbitrary file descriptors. This allow standard input (fd 0) to be closed and re-opened for a different resource, which allows a silent permission prompt bypass. This is exploitable by an attacker controlling the code executed inside a Deno runtime to obtain arbitrary code execution on the host machine regardless of permissions. This bug is known to be exploitable. There is a working exploit that achieves arbitrary code execution by bypassing prompts from zero permissions, additionally abusing the fact that Cache API lacks filesystem permission checks. The attack can be conducted silently as stderr can also be closed, suppressing all prompt outputs. Version 1.39.1 fixes the bug. Affected products include: Deno. Version information: version 1.39.0.
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Deno is a JavaScript, TypeScript, and WebAssembly runtime. In version 1.39.0, use of raw file descriptors in op_node_ipc_pipe() leads to premature close of arbitrary file descriptors, allowing standard input to be re-opened as a different resource resulting in permission prompt bypass. Node child_process IPC relies on the JS side to pass the raw IPC file descriptor to op_node_ipc_pipe(), which returns a IpcJsonStreamResource ID associated with the file descriptor. On closing the resource, the raw file descriptor is closed together.
Use of raw file descriptors in op_node_ipc_pipe() leads to premature close of arbitrary file descriptors. This allow standard input (fd 0) to be closed and re-opened for a different resource, which allows a silent permission prompt bypass. This is exploitable by an attacker controlling the code executed inside a Deno runtime to obtain arbitrary code execution on the host machine regardless of permissions.
This bug is known to be exploitable. There is a working exploit that achieves arbitrary code execution by bypassing prompts from zero permissions, additionally abusing the fact that Cache API lacks filesystem permission checks. The attack can be conducted silently as stderr can also be closed, suppressing all prompt outputs.
Version 1.39.1 fixes the bug.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations. Rated c
Deno versions 2.2.0 through 2.2.4 contain an authorization bypass vulnerability in SQLite database handling that allows
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Rated high severity (CVSS 8.8), this vulnerability is low att
Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Rated high
Command injection on Windows in the Deno JavaScript/TypeScript runtime (versions prior to 2.5.3 and 2.2.15) allows attac
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Rated high severity (CVSS 8.3), this vulnerability is remotel
Command injection in Deno versions prior to 2.6.8 allows unauthenticated remote attackers to execute arbitrary commands
Arbitrary code execution in Deno runtime versions before 2.5.6 allows unauthenticated attackers to bypass shell script e
Deno versions up to 2.6.0 contains a vulnerability that allows attackers to have infinite encryptions (CVSS 7.5).
Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upg
Deno is a runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Rated high severity (CVSS 7.5), this
Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Rated high severity (CVSS 7.4), this vul
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