CVE-2020-26149

Name: CVE-2020-26149
Creator: NVD / NIST
Published: 2020-09-30T18:15:27.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2020-26149 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. NATS nats.js before 2.0.0-209, nats.ws before 1.0.0-111, and nats.deno before 1.0.0-9 allow credential disclosure from a client to a server.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

NATS nats.js before 2.0.0-209, nats.ws before 1.0.0-111, and nats.deno before 1.0.0-9 allow credential disclosure from a client to a server.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Linuxfoundation	Nats.Deno	< 1.0.0-9
Linuxfoundation	Nats.Js	< 2.0.0-209
Linuxfoundation	Nats.Ws	< 1.0.0-111

References

http://www.openwall.com/lists/oss-security/2020/09/30/3Mailing List, Third Party Advisory
https://github.com/nats-io/nats.deno/compare/v1.0.0-8...v1.0.0-9Patch, Third Party Advisory
https://github.com/nats-io/nats.ws/commit/0a37ac2a411ff63f0707cda69a268c5fc4079eb7Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/30/3Mailing List, Third Party Advisory
https://github.com/nats-io/nats.deno/compare/v1.0.0-8...v1.0.0-9Patch, Third Party Advisory
https://github.com/nats-io/nats.ws/commit/0a37ac2a411ff63f0707cda69a268c5fc4079eb7Patch, Third Party Advisory

Timeline

Published: Sep 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26149?

NATS nats.js before 2.0.0-209, nats.ws before 1.0.0-111, and nats.deno before 1.0.0-9 allow credential disclosure from a client to a server.

How severe is CVE-2020-26149?

CVE-2020-26149 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26149?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26149?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST