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.
Project Subscriptions
No data.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-6wmf-3r64-vcwv | Crass : Large numeric exponents cause CPU and memory denial of service |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Crass: Large numeric exponents cause CPU and memory denial of service | |
| Weaknesses | CWE-789 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-30T19:41:24.227Z
Reserved: 2026-07-10T20:28:17.513Z
Link: CVE-2026-61845
No data.
Status : Deferred
Published: 2026-10-30T19:18:28.197
Modified: 2026-10-30T19:39:14.897
Link: CVE-2026-61845
No data.
OpenCVE Enrichment
No data.
Weaknesses
Github GHSA