CVEvulnerability
CVE-2026-61846
Exploitation and prioritisation
- EPSS
- 0.49% chance of exploitation in the next 30 days · in the top 58.1% of all CVEs (2026-11-03)
- EU Vulnerability Database
- EUVD-2026-114322
Affected packages
| Ecosystem | Package | Vulnerable | Fixed in | Advisory |
|---|---|---|---|---|
| RubyGems | crass | < 1.0.7 | 1.0.7 | GHSA-6jxj-px6v-747w |
- Status
- Deferred
- Published
- 2026-10-30
- Last modified
- 2026-10-30
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 6.3 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/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-674
Description
Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, Crass recursively parses `CSS simple blocks and functions` without a depth guard. An attacker-controlled CSS value containing deeply nested blocks or functions can recurse until Ruby raises `SystemStackError`: stack level too deep, or cause excessive memory usage. Version 1.0.7 adds a configurable depth limit with a conservative default. This issue is fixed in version 1.0.7.
Related
Weakness · CWE (1)
- CWE-674 Uncontrolled Recursion weakness
Referenced by GitHub Advisory · alias (1)
- GHSA-6jxj-px6v-747w Crass: Deeply nested CSS blocks and functions can trigger a SystemStackError or excessive memory usage advisory · RubyGems