CVE-2021-3127
HIGH
7.5
CVSS Score
Published: March 16, 2021 at 07:55 PM UTC
Updated: June 17, 2026 at 04:04 AM UTC
2 products affected across 2 vendorsNats ServerJwt Library
Using N/A by N/A?
Get instant alerts when new vulnerabilities affect N/A - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 1%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.0.0 ≤ v < 2.2.0
v < 2.0.1
Affected range stops below 2.0.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCExploitVendor Advisory
Source: [email protected]
https://advisories.nats.io/CVE/CVE-2021-3127.txtCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-755
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card