CVE-2020-26521

Published: 06/11/2020 Updated: 07/11/2023

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

The JWT library in NATS nats-server prior to 2.1.9 allows a denial of service (a nil dereference in Go code).

Vulnerable Product	Search on Vulmon	Subscribe to Product
linuxfoundation nats-server
fedoraproject fedora 33

Debian Bug report logs - #988950 CVE-2020-26892 CVE-2020-26521 Package: src:golang-github-nats-io-jwt; Maintainer for src:golang-github-nats-io-jwt is Debian Go Packaging Team <team+pkg-go@trackerdebianorg>; Reported by: Moritz Muehlenhoff <jmm@debianorg> Date: Fri, 21 May 2021 19:54:01 UTC Severity: grave Tags: s ...

Folks, The NATS project has a new advisories website: <advisoriesnatsio/> 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 + Inc ...

CWE-476 http://www.openwall.com/lists/oss-security/2020/11/02/2 https://github.com/nats-io/nats-server/commits/master https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT67XCLIIBYRT762SVFBYFFTQFVSM3SI/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988950 https://nvd.nist.gov

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