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Date: Mon, 2 Nov 2020 12:34:29 -0500
From: Phil Pennock <>
Cc: Phil Pennock <>
Subject: [CVE-2020-26521][CVE-2020-26892] NATS JWT vulnerabilities


The NATS project has a new advisories website:

We also have two new CVEs; both relate to our JWT handling and both
affect the NATS server:

* CVE-2020-26521
  + Nil deref in JWT library, causing Go panic
  + NATS server upgrade required to avoid Denial-of-Service
  + 2020-11-02
* CVE-2020-26892
  + Incorrect credential expiration handling via JWT library
  + API fixes needed by library users
  + NATS server upgrade required for expiration to work
  + 2020-11-02

The text of our advisories should be attached.

We have just released NATS server 2.1.9 which includes the fixes for
both these issues.

-Phil Pennock

View attachment "CVE-2020-26521.txt" of type "text/plain" (1525 bytes)

View attachment "CVE-2020-26892.txt" of type "text/plain" (1633 bytes)

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)

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