Vulnerability in Linuxfoundation Nats-Server

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-3127: held from 0.014 to 0.014.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-3127?
CVE-2021-3127 is a high-severity vulnerability in Linuxfoundation Nats-Server, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2021-03-16.
How severe is CVE-2021-3127?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-3127 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.