SB20260423124 - Improper Verification of Cryptographic Signature in Deno

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Main Vulnerability Database SB20260423124

SB20260423124 - Improper Verification of Cryptographic Signature in Deno

Published: April 23, 2026

Security Bulletin ID SB20260423124
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2025-24015)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to bypass ciphertext integrity checks.

The vulnerability exists due to improper cryptographic verification in the AES-GCM decryption implementation when processing AES-128-GCM or AES-256-GCM ciphertexts. A remote attacker can supply tampered ciphertext, an incorrect key, or modified authenticated data to bypass ciphertext integrity checks.

Authenticated data provided with set_aad is also not effectively validated.


Remediation

Install update from vendor's website.

References