cve.bz

CVE-2021-3127

7.5 highEPSS 1.4%

High (7.5). EPSS 1.4% chance of exploitation in the next 30 days. Fixed in github.com/nats-io/jwt/v2 2.0.1.

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.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE
CWE-755
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-62mh-w5cv-p88cGogithub.com/nats-io/jwt<=1.2.2no fix published
GHSA-62mh-w5cv-p88cGogithub.com/nats-io/jwt/v2<2.0.12.0.1
GHSA-j756-f273-xhp4Gogithub.com/nats-io/nats-server/v2<2.2.02.2.0
GO-2022-0386Gogithub.com/nats-io/jwt<1.2.3-0.20210314221642-a826c77dc9d21.2.3-0.20210314221642-a826c77dc9d2
GO-2022-0386Gogithub.com/nats-io/jwt/v2<2.0.12.0.1

References

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