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CVE-2021-29451
Missing validation of JWT signature in `ManyDesigns/Portofino`
Critical9.1EPSS 0.95%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.95% · top 39% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Weakness
Affected products
- affected >= 5.0.0, < 5.2.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavencom.manydesigns:portofino-coreGHSA-6g3c-2mh5-7q6x (opens in a new tab)
- Mavencom.manydesigns:portofino-dispatcherGHSA-6g3c-2mh5-7q6x (opens in a new tab)
References (3)
- https://github.com/ManyDesigns/Portofino/security/advisories/GHSA-6g3c-2mh5-7q6x (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/ManyDesigns/Portofino/commit/8c754a0ad234555e813dcbf9e57d637f9f23d8fb (opens in a new tab)x_refsource_MISCx_transferred
- https://mvnrepository.com/artifact/com.manydesigns/portofino (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-6g3c-2mh5-7q6x (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-29451)Record last updated .