Description
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto prior to version 0.3.14. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions. Version 0.3.14 patches the issue.
Scores
CVSS v3
9.1
EPSS
0.0001
EPSS Percentile
0.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-345
Status
published
Products (2)
juneandgreen/sm-crypto
< 0.3.14
npm/sm-crypto
0 - 0.3.14npm
Published
Jan 22, 2026
Tracked Since
Feb 18, 2026