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» GHSA-pgx9-497m-6c4v
Description
Summary
A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions.
Credit
This vulnerability was discovered by:
Basic information
Type
reviewed
Severity
critical Advisory on GitHub
Open advisory ↗ Repository advisory
Open repository advisory ↗ Source code
Browse source ↗ Published (advisory)
2026-01-21 16:13:25 UTC
Updated
2026-01-22 15:43:16 UTC
GitHub reviewed
2026-01-21 16:13:25 UTC
NVD published
2026-01-21
EPSS Score
Score
Percentile
0.01%
0.84%
CVSS Scores
Base score
Version
Severity
Vector
9.1
3.1
—
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-345
Insufficient Verification of Data Authenticity
Credits
XlabAITeam
(reporter)
A7um
(reporter)
tl2cents
(reporter)
keenanwgn
(reporter)
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
npm
sm-crypto < 0.3.14
0.3.14
—
cvelogic
Threat Intelligence