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.
Metrics
Affected Vendors & Products
References
History
Thu, 05 Nov 2026 03:30:00 +0000
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ssvc
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Sat, 31 Oct 2026 00:30:00 +0000
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| Weaknesses | CWE-770 | |
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threat_severity
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cvssV3_1
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Fri, 30 Oct 2026 20:45:00 +0000
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Rgrove
Rgrove crass |
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| Vendors & Products |
Rgrove
Rgrove crass |
Fri, 30 Oct 2026 19:00:00 +0000
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| 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. | |
| Title | Crass: Deeply nested CSS blocks and functions can trigger a SystemStackError or excessive memory usage | |
| Weaknesses | CWE-674 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-30T18:43:25.373Z
Updated: 2026-11-05T02:28:46.025Z
Reserved: 2026-07-10T20:28:17.513Z
Link: CVE-2026-61846
Updated: 2026-11-05T02:28:41.270Z
Status : Deferred
Published: 2026-10-30T19:18:28.370
Modified: 2026-11-05T03:17:29.340
Link: CVE-2026-61846