CVE-2021-3127

NATS Server 2.x before 2.2.0 and JWT library before 2.0.1 have Incorrect Access Control because Import Token bindings are mishandled.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://advisories.nats.io/CVE/CVE-2021-3127.txt	Exploit Vendor Advisory
https://advisories.nats.io/CVE/CVE-2021-3127.txt	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:linuxfoundation:nats-server::::::::
	cpe:2.3:a:nats:jwt_library::::::::

History

No history.

Information

Published : 2021-03-16 20:15

Updated : 2026-06-17 04:04

NVD link : CVE-2021-3127

Mitre link : CVE-2021-3127

CVE.ORG link : CVE-2021-3127

JSON object : View

Products Affected

linuxfoundation

nats-server

nats

jwt_library

CWE

CWE-755

Improper Handling of Exceptional Conditions

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