ubuntu-cve-2020-26892
Vulnerability from osv_ubuntu
Published
2020-11-06 08:15
Modified
2025-10-24 04:48
Summary
Details

The JWT library in NATS nats-server before 2.1.9 has Incorrect Access Control because of how expired credentials are handled.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-nats-io-jwt-dev",
            "binary_version": "0.0~git20181120.285cf2c-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "golang-github-nats-io-jwt",
        "purl": "pkg:deb/ubuntu/golang-github-nats-io-jwt@0.0~git20181120.285cf2c-4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20181120.285cf2c-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-github-nats-io-jwt-dev",
            "binary_version": "0.0~git20181120.285cf2c-4.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "golang-github-nats-io-jwt",
        "purl": "pkg:deb/ubuntu/golang-github-nats-io-jwt@0.0~git20181120.285cf2c-4.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0~git20181120.285cf2c-4.1"
      ]
    }
  ],
  "aliases": [],
  "details": "The JWT library in NATS nats-server before 2.1.9 has Incorrect Access Control because of how expired credentials are handled.",
  "id": "UBUNTU-CVE-2020-26892",
  "modified": "2025-10-24T04:48:49Z",
  "published": "2020-11-06T08:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26892"
    },
    {
      "type": "REPORT",
      "url": "https://advisories.nats.io/CVE/CVE-2020-26892.txt"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-26892"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nats-io/jwt/security/advisories/GHSA-4w5x-x539-ppf5"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2020/11/02/2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nats-io/jwt/pull/109"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-26892"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.