CVE-2026-61848
Crass: Non-ASCII characters cause superlinear CPU consumption
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 |
| Vendor | rgrove |
| Product | crass |
| Published | Oct 30, 2026 |
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Affected Versions
rgrove / crass
< 1.0.7