CVE-2026-61846 (GCVE-0-2026-61846)
Vulnerability from cvelistv5 – Published: 2026-10-30 18:43 – Updated: 2026-11-05 02:28
VLAI
EPSS
VEX
Title
Crass: Deeply nested CSS blocks and functions can trigger a SystemStackError or excessive memory usage
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 02:28 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/rgrove/crass/security/advisori… | x_refsource_CONFIRM |
| https://github.com/rgrove/crass/commit/cf68287356… | x_refsource_MISC |
| https://github.com/rgrove/crass/releases/tag/v1.0.7 | x_refsource_MISC |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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