CVEvulnerability
CVE-2026-61845
Exploitation and prioritisation
- EPSS
- 0.39% chance of exploitation in the next 30 days · in the top 67.2% of all CVEs (2026-11-03)
- CISA SSVC: exploitation
- none
- CISA SSVC: automatable
- no
- CISA SSVC: technical impact
- partial
- EU Vulnerability Database
- EUVD-2026-114321
Affected packages
| Ecosystem | Package | Vulnerable | Fixed in | Advisory |
|---|---|---|---|---|
| RubyGems | crass | < 1.0.7 | 1.0.7 | GHSA-6wmf-3r64-vcwv |
- Status
- Deferred
- Published
- 2026-10-30
- Last modified
- 2026-10-30
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-789
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.
Related
Weakness · CWE (1)
- CWE-789 Memory Allocation with Excessive Size Value weakness
Referenced by GitHub Advisory · alias (1)
- GHSA-6wmf-3r64-vcwv Crass : Large numeric exponents cause CPU and memory denial of service advisory · RubyGems