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 secrets. This vulnerability is fixed in 2.6.0.

Score

CVSS 4.0 9.2 Critical

Status

Analyzed - security-advisories@github.com

Published

2026-01-15

Last modified

2026-01-16

Weaknesses

CWE-325

Affected products

• Deno (Deno)
• Deno (Denoland)

References

• https://github.com/denoland/deno/releases/tag/v2.6.0
• https://github.com/denoland/deno/security/advisories/GHSA-5379-f5hf-w38v