VDB
CVE-2026-61845
CVE-2026-61845
PUBLISHED
CVSS 8.9 HIGH
Reported by GitHub_M · Published October 30, 2026
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.
Risk Scores
CVSS 4.0
8.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| rgrove | crass | < 1.0.7 |
| rgrove | crass | 0 |
| RubyGems | crass | 0 |
| chainguard | pghero | 0 |
| chainguard | pghero-fips | 0 |
Timeline
- Oct 20, 2026 CVE Published
- Oct 30, 2026 CVE Updated
- Oct 30, 2026 Security Advisory
- Oct 31, 2026 EPSS Score
References
- https://github.com/rgrove/crass/security/advisories/GHSA-6wmf-3r64-vcwv x_refsource_CONFIRM
- https://github.com/rgrove/crass/commit/ea6726b7f7cf7e85b23aa2240b8512b4f8d11ad9 x_refsource_MISC
- https://github.com/rgrove/crass/releases/tag/v1.0.7 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-61845 advisory
- https://github.com/advisories/GHSA-6wmf-3r64-vcwv advisory
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/crass/GHSA-6wmf-3r64-vcwv.yml advisory
- https://rubygems.org/gems/crass/versions/1.0.7 url