CVE-2021-29455 HIGH

CVE-2021-29455: Missing validation of JWT signature in `grassrootza/grassroot-platform`

Vendor Grassrootza
Product grassroot-platform
Weakness CWE-347
Published April 19, 2021
Last update August 3, 2024
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

Grassroot Platform is an application to make it faster, cheaper and easier to persistently organize and mobilize people in low-income communities. Grassroot Platform before master deployment as of 2021-04-16 did not properly verify the signature of JSON Web Tokens when refreshing an existing JWT. This allows to forge a valid JWT. The problem has been patched in version 1.3.1 by deprecating the JWT refresh function, which was an overdue deprecation regardless (the "refresh" flow is no longer used).

Key dates

02Disclosure timeline

April 19, 2021 CVE published
August 3, 2024 Record updated