CVE-2026-22863

Deno node:crypto doesn't finalize cipher

CVSS 9.2 CRITICALEPSS 0.2%CWE-325

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.

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

Affected products

denoland · deno

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References

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