CVE-2026-22863
High
Description
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 secrets. This vulnerability is fixed in 2.6.0.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Deno
PublishedJan 15, 2026
First seenJan 15, 2026
Weakness typeCWE-325CWE-325
How to fix
Update
- deno deno2.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| deno deno | v < 2.6.0 | 2.6.0 |
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