CVE-2021-29455
HIGHGrassroot Platform < 1.3.1 - Improper Verification of Cryptographic Signature in JWT Refresh
Title source: llmDescription
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).
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734
Product, Third Party Advisory x_refsource_misc
https://github.com/grassrootza/grassroot-platform/
Patch, Third Party Advisory x_refsource_misc
https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67f
Scores
CVSS v3
7.5
EPSS
0.0076
EPSS Percentile
50.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-347
Status
published
Products (1)
grassroot/grassroot_platform
< 1.3.1
Published
Apr 19, 2021
Tracked Since
Feb 18, 2026