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Package details: pkg:npm/jsonwebtoken@1.0.0
purl pkg:npm/jsonwebtoken@1.0.0
Next non-vulnerable version 4.2.2
Latest non-vulnerable version 9.0.0
Risk
Vulnerabilities affecting this package (2)
Vulnerability Summary Fixed by
VCID-54h7-2gp7-1yb9
Aliases:
GMS-2015-4
JWT Verification bypass with "none" algorithm It is possible for an attacker to create his own signed token with any payload he wants and have it considered valid using the "none" algorithm.
4.2.2
Affected by 0 other vulnerabilities.
VCID-5n9u-avux-mbhx
Aliases:
CVE-2015-9235
GHSA-c7hr-j4mj-j2w6
Use of a Broken or Risky Cryptographic Algorithm In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an asymmetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family).
4.2.2
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-06-04T20:14:56.758633+00:00 GitLab Importer Affected by VCID-5n9u-avux-mbhx https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/jsonwebtoken/CVE-2015-9235.yml 38.6.0
2026-06-04T20:04:46.880884+00:00 GitLab Importer Affected by VCID-54h7-2gp7-1yb9 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/jsonwebtoken/GMS-2015-4.yml 38.6.0