Deno
CVE-2023-26103
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V2 - Validation and Business Logic Regex complexity limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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 under CWE-1333. 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 significantly slow down a web socket server. Affected products include: Deno. Version information: before 1.31.0.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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 significantly slow down a web socket server.
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
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
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 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).
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
Exploit-DB