Back
CVE-2021-29451Missing validation of JWT signature in `ManyDesigns/Portofino`
- 9.1CriticalCVSS base score
- 0.95%Exploitation in 30 daysEPSS · top 38% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 17 days later
· 17 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 38% of all CVEs (14 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.
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
References3
- 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)
- EUVD EUVD-2021-0773 (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://cveledger.app/cve/CVE-2021-29451)Record last updated .