high8.9
CVE-2026-61845
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, Crass converts `CSS scientific notation` number values with unbounded exponentiation before clamping the result to `Float::MAX`. Applications that use Crass to parse attacker-controlled CSS strings can be forced to spend disproportionate CPU and memory parsing a tiny input, potentially resulting in a crash. This issue is fixed in version 1.0.7.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rubygems | crass | < 1.0.7 | 1.0.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-6wmf-3r64-vcwv
- https://github.com/rgrove/crass/security/advisories/GHSA-6wmf-3r64-vcwv
- https://github.com/rgrove/crass/releases/tag/v1.0.7
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/crass/GHSA-6wmf-3r64-vcwv.yml
- https://rubygems.org/gems/crass/versions/1.0.7
- https://github.com/rgrove/crass/commit/ea6726b7f7cf7e85b23aa2240b8512b4f8d11ad9