VulnerabilityModified
CVE-2021-29455
This allows to forge a valid JWT.
MEDIUM 5.3EPSS 0.76%
Does this matter?
Lower severity and a low EPSS score (0.76%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.76% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- grassroot/grassroot platform
- Source
- security-advisories@github.com
References
- https://github.com/grassrootza/grassroot-platform/Product, Third Party Advisory
- https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67fPatch, Third Party Advisory
- https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734Third Party Advisory
- https://github.com/grassrootza/grassroot-platform/Product, Third Party Advisory
- https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67fPatch, Third Party Advisory
- https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.