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CRITICALCVE-2026-22863Published Modified CNA GitHub_M

CVE-2026-22863: Deno node:crypto doesn't finalize cipher

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.

Metrics

CVSS v4.0
9.2
Severity
CRITICAL
Fixed in
Affected Products
1
Affected packages
  • denoland / deno
    < 2.6.0
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
CVE-2026-22863: Deno node:crypto doesn't finalize cipher | HarborGuard CVE