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.

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.

EPSS: 0.015 (70.7th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

Public proof-of-concept exploits

leoambrus/artefactswithoutCVEonGitHubAdvisoryDatabase

References

cve@mitre.org (Exploit, x_refsource_MISC, Vendor Advisory)

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.