Resource exhaustion in Rgrove Crass
CVE-2026-61848
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
EPSS exploit prediction
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Affected products
- Rgrove Crass — versions < 1.0.7