Missing Required Cryptographic Step in Deno - CVE-2026-22863
Published: April 23, 2026
Vulnerability identifier: #VU127064
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-22863
CWE-ID: CWE-325
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Deno Land
Affected software:
Deno
Deno
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a missing cryptographic step in node:crypto cipher finalization when finalizing a cipher created with createCipheriv. A remote attacker can trigger repeated encryptions to disclose sensitive information.
The issue can enable brute-force attempts and more refined attacks aimed at learning server secrets.
How to mitigate CVE-2026-22863
Install security update from vendor's website.