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Status published
Critical
CVE-2021-29451
Missing validation of JWT signature in `ManyDesigns/Portofino`
Vulnerability Description
Portofino is an open source web development framework. Portofino before version 5.2.1 did not properly verify the signature of JSON Web Tokens. This allows forging a valid JWT. The issue will be patched in the upcoming 5.2.1 release.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
Affected Vendor
ManyDesigns
View all reports →Affected Software
Portofino
Vulnerable Versions:
>= 5.0.0, < 5.2.1
Timeline
Official Publish:
April 16th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N