CVE-2020-26521

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Source
https://cve.org/CVERecord?id=CVE-2020-26521
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26521.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-26521
Aliases
Downstream
Related
Published
2020-11-06T08:15:13.563Z
Modified
2026-05-28T04:05:53.305809687Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "33"
                }
            ],
            "vendor_product": "fedoraproject:fedora"
        }
    ]
}
References

Affected packages

Git / github.com/nats-io/nats-server

Affected ranges

Type
GIT
Repo
https://github.com/nats-io/nats-server
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7c7662603115c1f53a9bacfa0115893c8ebe6fd4
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.1.9"
        }
    ]
}

Affected versions

v0.*
v0.5.1
v0.5.2
v0.5.4
v0.5.6
v0.6.0
v0.6.2
v0.6.4
v0.6.6
v0.6.8
v0.7.0
v0.7.2
v0.8.0
v0.8.1
v0.9.2
v0.9.4
v0.9.6
v1.*
v1.0.0
v1.0.2
v1.0.4
v1.0.6
v1.1.0
v1.2.0
v1.3.0
v2.*
v2.0.0
v2.0.0-RC14
v2.0.0-RC19
v2.0.2
v2.0.4
v2.1.0
v2.1.2
v2.1.4
v2.1.6
v2.1.7
v2.1.8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26521.json"