CVE-2021-29455

MOYENNE 5.3CVE-2021-29455 · Published 19/04/2021 · updated 17/06/2026

En bref

CVE-2021-29455 est une vulnérabilité MOYENNE (CVSS 5.3) touchant grassroot platform (grassroot).
Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.76%, plus élevée que 55.4% des vulnérabilités.
Correctif : mettre à jour vers 1.3.1 ou plus récent.

Package	Affected versions	Patched versions
grassroot platform grassroot	`< 1.3.1`	`1.3.1`

Description

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

grassrootza/grassroot-platform · Product
grassrootza/grassroot-platform commit a2e6e88 · Patch
grassrootza/grassroot-platform security advisory · Third Party Advisory

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