CVE-2023-26103
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Deno
PublishedFeb 25, 2023
First seenFeb 25, 2023
Weakness typeCWE-1333CWE-1333
How to fix
Update
- deno deno1.31.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| deno deno | v < 1.31.0 | 1.31.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.