CVE-2026-22863 — Missing Cryptographic Step in Deno

CWE-325 — Missing Cryptographic Step4 documents4 sources
Severity
9.2CRITICALNVD
EPSS
0.0%
top 99.10%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Denoland DenoDeno
Timeline
PublishedJan 15
Latest updateJan 16

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.

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

Affected Packages3 packages

▶NVDdeno/deno< 2.6.0
▶crates.iodeno/deno< 2.6.0
▶CVEListV5denoland/deno< 2.6.0

🔴Vulnerability Details

2
OSV
Deno node:crypto doesn't finalize cipher↗2026-01-16
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GHSA
Deno node:crypto doesn't finalize cipher↗2026-01-16
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🕵️Threat Intelligence

1
Wiz
CVE-2026-22863 Impact, Exploitability, and Mitigation Steps | Wiz↗
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