CVEvulnerability

CVE-2020-26160

7.5 HIGH Published 2020-09-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-09-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-287, CWE-755

Description

jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.

Affected configurations

• jwt-go project jwt-go (<= 3.2.0)

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-755 Improper Handling of Exceptional Conditions weakness

References