CVE-2026-61845
Crass: Large numeric exponents cause CPU and memory denial of service
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, 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.
| CWE | CWE-789 |
| Vendor | rgrove |
| Product | crass |
| Published | Oct 30, 2026 |
| Last Updated | Oct 30, 2026 |
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Affected Versions
rgrove / crass
< 1.0.7