medium6.3
CVE-2026-61848
Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification.
Impact
Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, when Crass parses input containing `non-ASCII characters`, inefficiencies in tracking the positions of `multi-byte characters` result in superlinear parsing time. An attacker-controlled CSS input consisting of many `non-ASCII characters` can therefore cause excessive CPU consumption and potentially denial of service. This issue is fixed in version 1.0.7.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rubygems | crass | < 1.0.7 | 1.0.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Rgrove | Crass | before 1.0.7 |