Missing validation of JWT signature in `ManyDesigns/Portofino`
Priority MEDIUM 41CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-347.
Summary
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.
Why it matters now
EPSS 0.00949 61st percentileScored 2026-11-07
Fix Fixed Portofino (ManyDesigns): 5.2.1com.manydesigns:portofino-dispatcher (Maven): 5.2.1+1 more product
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ManyDesigns | Portofino | 5.0.0 to before 5.2.1 | 5.2.1 | Patch available | CNA |
| — | com.manydesigns:portofino-dispatcher (Maven) | 5.0.0 to before 5.2.1 | 5.2.1 | Patch available | GHSA-6g3c-2mh5-7q6x |
| — | com.manydesigns:portofino-core (Maven) | 5.0.0 to before 5.2.1 | 5.2.1 | Patch available | GHSA-6g3c-2mh5-7q6x |
- Portofino VendorManyDesigns Affected 5.0.0 to before 5.2.1 Fixed in 5.2.1 Patch available CNA
- com.manydesigns:portofino-dispatcher (Maven) Vendor— Affected 5.0.0 to before 5.2.1 Fixed in 5.2.1 Patch available GHSA-6g3c-2mh5-7q6x
- com.manydesigns:portofino-core (Maven) Vendor— Affected 5.0.0 to before 5.2.1 Fixed in 5.2.1 Patch available GHSA-6g3c-2mh5-7q6x
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:manydesigns:portofino:*:*:*:*:*:*:*:* | 5.0.0 to before 5.2.1 | Vulnerable | ManyDesigns |
- cpe:2.3:a:manydesigns:portofino:*:*:*:*:*:*:*:* Versions 5.0.0 to before 5.2.1 Vulnerable ·ManyDesigns
Remediation
- Fix · CNA Portofino (ManyDesigns) Fixed in 5.2.1
- Fix · GHSA-6g3c-2mh5-7q6x com.manydesigns:portofino-dispatcher (Maven) Fixed in 5.2.1 Advisory →
- Fix · GHSA-6g3c-2mh5-7q6x com.manydesigns:portofino-core (Maven) Fixed in 5.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29451
- 2026-10-03 Alias added: GHSA-6g3c-2mh5-7q6x
References
More ManyDesigns Portofino vulnerabilities
- TI-2022-03623 ManyDesigns Portofino WarFileLauncher.java createTempDir temp file CVSS 3.1HIGH 7.1
Sources
- CVE-2021-29451 · CVE Program
- CVE-2021-29451 · NVD
- FIRST EPSS
- GHSA-6g3c-2mh5-7q6x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences