CVE-2026-61845
Crass: Large numeric exponents cause CPU and memory denial of service
- State
- Published
- Severity
- 8.9 High
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Jul 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.9 High | 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 | GitHub_M |
Weaknesses
- CWE-789 Memory Allocation with Excessive Size Value
Affected Products
| Product | Versions |
|---|---|
crassrgrove |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.