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

January 16, 2026

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.

References

github.com/advisories/GHSA-5379-f5hf-w38v
github.com/denoland/deno
github.com/denoland/deno/releases/tag/v2.6.0
github.com/denoland/deno/security/advisories/GHSA-5379-f5hf-w38v
nvd.nist.gov/vuln/detail/CVE-2026-22863

Code Behaviors & Features

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