In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| puma(RubyGems) | 0 | 3.12.5 | N/A |
| puma(RubyGems) | 4.0.0 | 4.3.4 | N/A |
CVSS Metrics
