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CVE-2026-33894
March 27, 2026
Forge (also called "node-forge") is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). Attackers can forge signatures by stuffing “garbage” bytes within the ASN structure in order to construct a signature that passes verification, enabling Bleichenbacher style forgery. This issue is similar to CVE-2022-24771, but adds bytes in an addition field within the ASN structure, rather than outside of it. Additionally, forge does not validate that signatures include a minimum of 8 bytes of padding as defined by the specification, providing attackers additional space to construct Bleichenbacher forgeries. Version 1.4.0 patches the issue.
Affected Packages
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
node-forge (NPM):
Affected version(s) >=0.1.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
Improper Input Validation
EPSS
Base Score:
0.03